This is an English translation for reference. The Japanese version is the official text. If the two differ, the Japanese version prevails. Japanese version: 利用規約

KUBOMI Terms of Service

Version: 5th edition (first established: October 11, 2026)

Revised: November 11, 2026

Effective: November 11, 2026

Article 1 (Purpose and scope)

1. These Terms of Service (“these Terms”) set out the conditions for using the web service “KUBOMI” (https://kubomi.app; the “Service”) provided by the KUBOMI operator (the “operator”), and the rights and obligations between the operator and users.
2. These Terms apply to all users of the Service, whether they use the trial (not signed in), the Free plan, or a paid plan.
3. The Pricing page, the Legal notice (Act on Specified Commercial Transactions), the Privacy Policy, and the conditions shown on the confirmation screens when you subscribe to a paid plan or change your plan form part of the contract together with these Terms.
4. If the contents in the preceding paragraph differ, the contents more favorable to you apply, in addition to what applicable law requires. The operator will not, on the grounds of these Terms, treat you less favorably than what was shown to you when you subscribed or changed your plan. If the operator finds a difference, it will promptly correct what is shown.
5. The operator runs the Service as an individual. The operator’s name is given in the “Legal notice (Act on Specified Commercial Transactions)”.
6. Contact for the Service: contact form (https://kubomi.app/en/#/contact)
   On the contact form, above the send button, the operator shows an explanation of how your inquiry is handled (including that what you send is sent through Resend in the United States, and received and stored in AOL Mail provided by AOL Media LLC in the United States). Please read this explanation, check “I agree to the handling above”, and then send your inquiry (Privacy Policy, Article 5).

Article 2 (Definitions)

1. “User”: a person who agrees to these Terms and uses the Service
2. “Account”: the right to use the Service, registered for each user
3. “Audio files”: vocals, backing tracks, and other audio data that a user uploads to the Service
4. “Song”: audio data that the Service makes from audio files, with mixing and mastering applied. A song made from one upload and the versions rebuilt from that song together count as 1 song.
5. “Making a new song”: uploading audio files and adding a new song to your song list
6. “Rebuild”: making a new version of a song you have already made, with different settings
7. “Free plan”, “Lite”, and “PRO”: the plans set out in Article 8. Lite and PRO together are called “paid plans”.
8. “Billing unit”: “monthly”, where you pay the fee for a paid plan every month, or “yearly”, where you pay it every year
9. “Billing period”: the period covered by the fee you paid (1 month for monthly, 1 year for yearly)
10. “Renewal time”: the date and time when a billing period ends and the next billing period starts. It is the date and time of the next charge managed by Stripe, and is shown as “next billing date” or similar on your account page and on Stripe’s pages (the Stripe plan management page and your Link account).
11. “Download”: the complete transfer of a song file (WAV or MP3) from the Service’s server to your device (recorded on the server side as a completed transfer). If you press the download button but the transfer fails or stops partway, it is not a download. Playing it on screen is not a download either.
12. “Immediate change” (shown on screen as “Change now”): a change of paid plan that is a change from Lite to PRO, a change from monthly to yearly, or both, and that includes neither a change from PRO to Lite nor a change from yearly to monthly (a change whose “when it applies” is “Immediately” in the Appendix)
13. “Booked change”: a change of paid plan that includes a change from PRO to Lite or a change from yearly to monthly (a change whose “when it applies” is “At the next renewal time” in the Appendix)
14. “Trial”: a way for a person who is not signed in to make and use a song without registering an account, under Article 9, paragraph 6, once (1 song) per person
15. “Trial cookie”: a value (a cookie named kubomi_trial) saved in the browser on your device when you make a song in the trial. It is used to confirm who owns the trial song and to limit the number of trials while the cookie is valid. The operator keeps only a value converted from this value in a way that cannot be reversed (a hash value), and does not record IP addresses. It is valid for 24 hours. After that, the trial cookie is removed from the browser, and the operator can no longer identify that browser by the trial cookie.
16. “Original song”: audio data containing the original singing of the song, which a user may choose to upload on the tempo page (the page for fixing the timing of the vocals in a song; on the Japanese screen, the original song is called “honke”) (for a video file, its audio; the video is not used)
17. “Measurement results of the original song”: values that the Service’s program makes from the original song (values showing the strength of the onsets of the vocals in the original song for each short time interval, the time offset of the original song against the backing track, and the log of the measurement process). The measurement results of the original song do not contain the audio of the original song, and cannot be turned back into audio of the original song that can be listened to.

Article 3 (Agreeing to these Terms)

1. On the sign-in screen, above the “Send the sign-in link” and “Sign in with Google” buttons, links to these Terms and the Privacy Policy and a consent statement are shown. By reading them and pressing a button, you agree to these Terms and the Privacy Policy. Your account is registered when you first sign in.
2. On the paid plan order screen, above the “Go to payment” button, links to these Terms and the Privacy Policy and a consent statement are shown again, and the operator asks for your consent.
3. For providing personal data to third parties in a foreign country (to Resend in the United States, to which the operator entrusts sending sign-in and notice emails, and to Stripe, Link, and others for payment), a statement separate from those in the preceding 2 paragraphs is shown above the button, and the operator asks for your consent. The recipient, the system for protecting personal information in the recipient’s country, and the recipient’s measures are set out in Article 5 of the Privacy Policy. For sending the content of your inquiry through Resend in the United States and receiving and storing it in AOL Mail in the United States, an explanation is shown above the send button on the contact form, and you give your consent by checking “I agree to the handling above” and sending your inquiry (Article 1, paragraph 6).
4. As a record of consent, the operator records the version of the document you agreed to, the statement shown and its language (Japanese / English), the date, time, and situation of your consent, and the recipients and the items of information provided.
5. In the trial, above the “Create” button on the screen where you add audio files, links to these Terms and the Privacy Policy and the statement ‘By pressing “Create”, you agree to the Terms of Service and the Privacy Policy (in Japanese). Trial songs are deleted after 24 hours.’ are shown (on the English pages, the English statement with the same meaning). By reading them and pressing the button, you agree to these Terms and the Privacy Policy. In the trial, the operator does not collect your email address and does not provide personal data to third parties in a foreign country, so the statement in paragraph 3 is not shown.
6. In the trial, the record of consent (paragraph 4) is linked to the hash value of the trial cookie instead of a member number. When you sign in and the trial song is moved to your account, this record is linked to your member number.
7. If you do not agree to these Terms, you cannot use the Service.

Article 4 (What the Service does)

1. The Service applies automatic mixing and mastering to the vocal and backing track audio files a user uploads, and makes a song. You can change the settings and rebuild a song you have made.
2. On the tempo page, you can upload the original song (this is optional). The Service extracts the vocals from the original song, makes the measurement results of the original song, and uses them only to choose where to align the start of each note of your vocals when you rebuild. Songs the Service makes do not contain the audio of the original song.
3. Songs are made automatically by the Service’s program. The operator does not guarantee that the result will suit your taste or purpose. Before you subscribe to a paid plan, you can listen to the whole song on the Free plan.
4. The operator may change the Service’s features to improve quality or for other reasons. However, a change to the contents of paid plans (the number of songs you can make, downloads, and how long songs are kept) that is to your disadvantage follows the procedure in Article 25.
5. The operator will not send users’ information, audio files, or original songs to any generative AI provider. Extracting the vocals from the original song is done inside the Service’s server.

Article 5 (Accounts and signing in)

1. You sign in with a sign-in link sent to your registered email address (no password is used; the link is valid for 15 minutes and can be used only once) or with a Google account.
2. Each account must be used by only one user. You may use it for work (such as delivering mixes to clients). If several people in a company or other organization use the Service, each person must register their own account.
3. You must register an email address at which you can receive email. The operator sends sign-in links, renewal notices, notices of changes to these Terms or prices, and other important notices to this email address. Emails are sent in Japanese or English (sign-in emails follow the screen language at the time; renewal notices and similar emails follow your account’s language setting).
4. You are responsible for keeping your sign-in links and your signed-in devices safe. Letting others use your sign-in link or signed-in device, and sharing an account among several people, are prohibited. If you break this rule, the operator may suspend your account or take other measures under Article 22.

Article 6 (Limits on Free plan accounts and matching)

1. Each person may have only 1 Free plan account. If one person registers several Free plan accounts, the operator may suspend the accounts or take other measures under Article 22.
2. To apply this limit, the monthly song count in Article 9, paragraph 2, and the 7-day refund in Article 15 (once per person), the operator checks whether the email address is the same (after the following differences in writing are normalized) or the Google account is the same. Email addresses are compared after normalizing differences between uppercase and lowercase letters and, for Gmail addresses, differences in dots (.) and in the text after “+”. Addresses written differently, such as forwarding addresses or private addresses, are treated as different addresses (for example, Uta.Mix+demo@gmail.com and utamix@gmail.com are treated as the same address). The operator does not match by device or IP address (the limit on the number of trials is applied by the trial cookie saved in that browser while it is valid; this limit does not use IP addresses either).
3. For matching, the operator keeps the values made by converting the normalized email address and the Google account ID with a secret key (the “matching hash”), together with the number of songs made on the Free plan in that month and whether the 7-day refund has been used, while the account exists and for 2 years from the date you delete your account, and then deletes them. The matching hash is handled as personal information. Details are set out in Article 2 of the Privacy Policy.
4. If you register again with the same email address (with the differences in writing in the preceding paragraph normalized) or the same Google account within 2 years from the date you deleted your account, matching adds the number of songs you made on the Free plan in the same month to the number before you deleted your account, and whether you used the 7-day refund also carries over.
5. If, as a result of matching, a message says you cannot make a new song or get a refund and you do not know why, please contact the operator. The operator will check the matching result by hand and, if the match was wrong, will reverse the combined count and restore the number of songs you can make and your eligibility for a refund.

Article 7 (Minors)

1. A minor who subscribes to a paid plan must first get the consent of a parent or other legal guardian.
2. If a minor’s order for a paid plan can be rescinded under the Civil Code of Japan, please contact the operator. In accordance with the law, the operator will check the individual circumstances and respond. The operator will not ask for ID documents or similar beyond what is needed for this check.
3. If rescission is allowed by law, the operator will refund the full amount of the fees paid under that order (including payments by automatic renewal and payments for immediate changes), end the paid plan, and switch you to the Free plan. If the refund cannot be made through Link, the operator will refund by bank transfer or another method. Songs are handled under Article 20, paragraph 3, and if you wish, the operator will delete your account and songs at once.
4. The rescission and refund in the preceding 2 paragraphs are separate from the 7-day refund in Article 15, and apply regardless of the period, number of times, and conditions in the same Article.

Article 8 (Plans and fees)

1. The Service has the following plans. Fees are in US dollars (USD). Depending on the country or region where you live, consumption tax and other taxes may be shown at checkout in addition to the fee, and you may have to pay them. For customers who live in Japan, Japanese consumption tax may not be added separately at checkout. Also, the amount you pay may be charged after conversion to Japanese yen.

2. On every plan, you can use mixing, mastering, correction, and rebuilding, and you can listen to the whole song you made. On the waveform page, you can fix the volume and left-right position (PAN) of parts; if the ranges you fixed come to 30 seconds in total or less, you can save the fixes, apply them to the song, and download that version on every plan (overlapping ranges are counted only once). Saving the part over 30 seconds, applying it to the song, and downloading that version are available on the PRO plan. For a Lite billing period that started before October 22, 2026, you can also use the part over 30 seconds until the end of that period.
3. You can download in 4 formats: WAV (48 kHz / 24-bit), WAV (48 kHz / 16-bit), WAV (44.1 kHz / 16-bit), and MP3 (320 kbps). On the Free plan, you can download MP3 (320 kbps). WAV downloads are available on paid plans.
4. Yearly means the fee for the whole year is paid once when you subscribe and at each renewal.
5. We do not sell songs one at a time.
6. For 1 song, you can upload up to 24 files, up to 200 MB per file, and up to 1,500 MB in total. When the Service is busy, processing may wait in a queue. An original song file can be up to 200 MB per file. If you upload the original song when making the song, the original song also counts toward the total above. When the Service is busy, measuring the original song may wait in a queue.
7. The trial is for people who are not signed in, under Article 9, paragraph 6. In the trial, you can also use mixing, mastering, correction, and rebuilding, and you can listen to the whole song you made. However, you cannot download. To download, you need to sign in.

Article 9 (Number of songs you can make)

1. The number of songs you can make is counted by the number of times you make a new song. Rebuilds are not counted. Deleting a song does not reduce the number of songs made. If processing fails with an error and the song is not completed, it is not counted.
2. On the Free plan, you can make up to 3 new songs per month per person (counted by the songs made while on the Free plan; songs made while on a paid plan are not included). Songs are counted again on the 1st of each month (JST), and unused songs do not carry over to the next month. If matching under Article 6 shows that it is the same person, the numbers of songs made on several accounts are combined for that month. While on the Free plan, you can rebuild a song up to 10 times (counting the rebuilds already done for that song). While on a paid plan, the number of rebuilds is not capped (except in cases under Article 19, paragraph 1, item 6).
3. On paid plans, you can make up to 10 new songs per month on Lite and up to 35 new songs per month on PRO. Songs are counted again on the 1st of each month (JST), and unused songs do not carry over to the next month. The same applies to yearly plans. If you subscribe partway through a month, the cap for that month is not reduced.
4. Once you reach the cap for the month, you cannot make new songs until the 1st of the next month. During this time, you can still rebuild and download the songs you have already made. If you are on the Free plan, the operator will suggest changing to a paid plan; if you are on Lite, the operator will suggest changing to PRO.
5. If your plan changes partway through a month (including a switch at the renewal time), or if you subscribe to a paid plan again in the same month, the number of new songs made on paid plans in that month is counted toward the cap of the plan after the change or the new order.
6. People who are not signed in can make a new song as a trial, once (1 song) per person. You cannot use the trial again after the trial cookie expires, or in another browser or on another device (Article 19, paragraph 1, item 8). The operator applies this limit by the trial cookie (Article 2, item 15) saved in that browser while it is valid. A trial song can be rebuilt up to 10 times. Even if you delete a trial song, you cannot make a new song in that browser while the trial cookie is valid. If processing fails with an error and the song is not completed, it does not count as a trial. To avoid overloading the server, the operator sets overall caps on the number of trial songs processed at the same time and on the number of new trials that can start (per hour). While a cap is reached, the screen says so, and you cannot start a trial.
7. When you sign in, songs made in the trial are moved to your account as they are (Article 20, paragraph 9). Even after you sign in, songs made in the trial are not included in your account’s song count (the Free plan monthly count in paragraph 2 or the paid plan monthly count in paragraph 3). Rebuilds of a moved song are counted including the rebuilds done during the trial.

Article 10 (Downloads on the Free plan (MP3))

1. On the Free plan, you can download a song as MP3 (320 kbps) from the download button on the song page. The number of downloads is not capped. WAV downloads (Article 8, paragraph 3) are available on paid plans. A song that had been made downloadable up to WAV through the share link before the change can still be downloaded in all formats, as before, while it is shown on screen. For new songs, the same action will not make WAV downloadable.
2. The song page has the X (formerly Twitter) share button. The share button is optional; pressing it does not change what you can do, including downloads. Pressing it opens the X post screen with only the Service’s URL entered. Whether to post and what to post are up to you, and the operator does not check whether or what you post. The Service does not post anything automatically.
3. Free plan users can download all versions of a song, including rebuilt versions, as MP3 (320 kbps) while the song is shown on screen, and the number of downloads is not capped. However, a version in which the ranges fixed for volume and PAN on the waveform page come to more than 30 seconds in total cannot be downloaded, including as MP3, on the Free plan or on a plan that cannot use the part over 30 seconds. You can listen to it on screen.
4. Songs made during a paid plan period that ended because of a refund under Article 15, a rescission under Article 7, or a full refund or a dispute of a payment under Article 16, paragraph 5, cannot be downloaded on the Free plan.
5. Posts to X are subject to X’s terms of service.
6. Trial songs cannot be downloaded. After you sign in and the song is moved to your account, this Article applies.

Article 11 (Orders and payment)

1. The final confirmation screen for a paid plan order is the Stripe payment screen, which has the button to confirm payment. Before the confirm button on this screen, the operator shows the plan and billing unit, the number of songs you can make each month and other quantities, the amount of this payment and the amount of each renewal payment, when and how you pay, when the Service is provided, automatic renewal, how and by when to cancel your plan, the 7-day refund and the other refund conditions, the operator’s name and country, and the Merchant of Record, and provides a way to go back and choose the plan again.
2. The paid plan contract is formed when you complete the payment process on the screen in the preceding paragraph.
3. Billing, payment processing, and receipt of fees for paid plans are done by Link (Sold through Link, LLC; “Link”), an affiliate of Stripe, Inc., as the Merchant of Record. The operator provides the Service. Link’s terms of use and other rules also apply to the payment process.
4. The payment methods you can use are listed in the “Legal notice (Act on Specified Commercial Transactions)”. The operator does not receive credit card numbers or similar information.
5. When you subscribe, you pay the fee for the first billing period. You can use the paid plan immediately once payment is complete.
6. A receipt is sent by email after payment. On your account page, you can check your payment history and change your payment method.
7. Payments are in US dollars. In places including Japan, the Stripe payment screen may show an amount in Japanese yen or another local currency, and that amount may change at each renewal due to changes in exchange rates. Also, depending on the payment currency and the location of the payment provider, foreign transaction fees or currency conversion fees set by your card issuer or other provider may apply, and you pay these fees.
8. The order screen for a paid plan has a field for a referral code. Entering a referral code is optional. It does not change the price, the payment terms, or the features of the Service. How the operator handles an entered referral code is set out in the Privacy Policy.

Article 12 (Automatic renewal and price changes)

1. Unless you cancel your plan, your paid plan renews automatically at each renewal time with the same plan and billing unit (or, if you made a booked change, those after the change). At each renewal, you pay the fee in effect at that time by your registered payment method.
2. Because of how payments are processed, the renewal time may differ from the date and time of your last payment. The renewal time is the date and time of the next charge managed by Stripe as stated in Article 2, item 10, and is shown on your account page.
3. If your next renewal payment will be yearly (when you renew a yearly plan, or when you made a booked change from monthly to yearly), the operator sends a renewal notice to your registered email address within 24 hours from the point 14 days before the renewal time, stating the renewal time, the plan and payment amount at renewal, and how and by when to cancel your plan. If the notice cannot be sent, the operator tries to resend it until the renewal time. If you make a booked change when fewer than 14 days remain until the renewal time, the same information is given on the change confirmation screen and in an email sent right after you confirm. If you have canceled your plan, the notice is not sent. Link may also send you notices about renewal.
4. The operator may make a price change (price increase). A price change is made in a way that meets all of the following.
   • (1) The new price applies only from the payment at the renewal time. The fee for a period you have already paid for does not change, and the price is not changed partway through a billing period.
   • (2) At least 30 days before (for monthly) or 60 days before (for yearly) the renewal time at which the new price applies, the operator informs you of the price before and after the change, the renewal time at which it applies, and how to cancel your plan, by an individual notice to your registered email address and by posting on the pricing page and your account page.
   • (3) You can cancel your plan at any time before the renewal time at which the new price applies, and if you cancel, you can keep using the paid plan at the old price until the end of the period you paid for.
   • (4) The increase in a single price change is within 50% of the price before the change, and price changes are made no more than once in 12 months.
   • (5) For a price change beyond the range in the preceding item, in addition to the notices in the preceding 2 items, the plan renews at the new price only if you agree to the new price on your account page. If you do not agree, the paid plan ends at the end of the period you paid for, and you are switched to the Free plan (please download any songs you want to keep before then).
5. If a renewal payment fails, the operator informs you on your account page. Link tries the charge again for a certain period. During this time, you can keep using the paid plan. If payment still cannot be confirmed, the paid plan ends and you are switched to the Free plan.

Article 13 (Changing your plan)

1. If you are on a paid plan, you can change your plan and billing unit from your account page. For each combination of changes, when it applies, the payment amount, the next payment, and the monthly song count that applies are set out in the Appendix at the end of these Terms.
2. An immediate change applies from the time the change process is complete, and you pay the amount set out in the Appendix at the time of the change. If you change from Lite to PRO without changing the billing unit, you pay the difference in fees for the remaining period, and the renewal time does not change. If you change from monthly to yearly, you pay the yearly fee minus the remaining part of your current billing period, and a new 1-year billing period starts from the time of the change.
3. A booked change applies from the next renewal time. Until then, you can use the plan before the change. We do not refund any difference resulting from this change. You can cancel the booking from your account page before the next renewal time.
4. On the screen with the button to confirm the change (the Stripe plan management page or the Service’s change confirmation screen), the operator shows the plans before and after the change, the quantities after the change, when it applies, the amount you pay at the time of the change, the next renewal time and the amount at that time, and the conditions for canceling your plan and for refunds. You pay the amount shown on this screen.

Article 14 (Canceling your plan)

1. To cancel your plan means to stop future automatic renewals of a paid plan. You can cancel your plan from your account page at any time. You can also do this from your Link account (link.com). If you complete the cancellation before the renewal time (shown on your account page), you will not be charged the next time.
2. After you cancel your plan, you can keep using the paid plan until the end of the period you paid for. For this reason, we do not refund fees for the remaining period (this also applies if you cancel a yearly plan partway through). However, this does not apply in the cases set out in Articles 15 and 16.
3. You can undo the cancellation from your account page until the end of the billing period.
4. When the billing period ends, you are switched to the Free plan, and songs are handled under Article 20, paragraph 3. Please download any songs you want to keep before the billing period ends.

Article 15 (The 7-day refund)

1. For your first payment when you newly subscribe to a paid plan (both monthly and yearly are covered), if all of the following apply, we will refund the full amount when you apply through “Ask for the 7-day refund” on your account page.
   • (1) It is within 7 days (168 hours) of your first payment.
   • (2) No download (Article 2, item 11) has been completed after your first payment. Downloads on the Free plan before payment are not counted; after payment, downloads of songs made while you were on the Free plan are also counted.
   • (3) You have not received a refund under this Article before.
2. The refund under this Article is limited to once per person. Whether it is the same person is checked by the method in Article 6, paragraph 2, while the records in paragraph 3 of the same Article are kept (while the account exists and for 2 years from the date you delete your account).
3. If you make an immediate change within the period in paragraph 1 and paid an amount at the time of the change, that amount is also covered by the refund.
4. If a download transfer fails or stops partway, it is not a download. If a download is recorded as completed and you do not recognize it, please contact the operator. The operator will check the record and, if the transfer was not completed, will give the refund under this Article.
5. When you apply for the refund under paragraph 1, that paid plan ends and you are switched to the Free plan. Songs are handled under Article 20, paragraph 3. It may take a few days for the refund to show on your card or other payment method.
6. Payments by automatic renewal are not covered by the refund in paragraph 1.
7. This Article does not limit your right to terminate or rescind the contract under applicable law, or your right to receive a refund that comes with it.

Article 16 (Other refunds)

1. Except in the cases set out in the preceding Article, we do not refund fees you have paid. However, in the following cases, we will refund as set out for each.
   • (1) If, due to a cause on the operator’s side (such as a system failure), making a new song, rebuilding, playback, or downloading could not be used by all users or by a substantial number of users for 24 hours or more in a row (except scheduled maintenance announced in advance, within the announced time): the fee for that billing period multiplied by the number of days it could not be used (each 24 hours counts as 1 day, and part of a day counts as 1 day) divided by the number of days in that billing period. If the operator confirms such a failure, it will announce it on the Service. The refund is given to those who contact the operator within 90 days from the date of the announcement (or, if there is no announcement, the date the failure began).
   • (2) If the Service ends under Article 21, paragraph 2: an amount prorated by day for the remaining billing period
   • (3) If a paid plan is ended partway through a billing period under Article 22: an amount prorated by day for the remaining billing period. However, if the violation caused damage to the operator and the amount can be confirmed by objective documents, the operator may deduct that amount. In this case, the operator will notify you of the amount deducted and the basis for it, and you may object by contacting the operator.
   • (4) If you choose a prorated refund under Article 25, paragraph 4: an amount prorated by day for the remaining billing period
   • (5) If an order is rescinded under Article 7: the amount set out in the same Article
   • (6) Any other case where a refund is required by law
2. The prorated calculation in the preceding paragraph is made by multiplying the fee for that billing period by the remaining number of days (part of a day counts as 1 day) divided by the number of days in that billing period, and any fraction of less than 1 cent is rounded up.
3. These Terms do not limit your right to terminate or rescind the contract under applicable law, or your right to receive a refund that comes with it.
4. Under its own policy, Link may accept refund requests within 60 days of payment in certain circumstances. This policy is separate from the operator’s refunds under the preceding Article and this Article, and Link decides whether to give such a refund.
5. If Link refunds the full amount, or if a dispute of a payment (chargeback) through your card issuer or other provider is finalized, the operator may end the corresponding paid plan and switch you to the Free plan. For a partial refund, the operator does not end the paid plan. If you object to this handling, please contact the operator.

Article 17 (Rights in audio files and songs)

1. For the audio files you upload, you must have the rights needed to use them on the Service, or have obtained the necessary permission from the rights holders.
2. If you upload audio files that include other people’s works, such as backing tracks for covers (“utattemita”), you are responsible for obtaining permission from the rights holders.
3. If you upload audio files that include another person’s vocals (such as audio files you handle for a mixing request), you must obtain that person’s consent.
4. You must also obtain any permission needed to distribute or publish the songs you make.
5. The operator does not claim any rights in the songs you make. The operator handles audio files and songs only to the extent needed to provide the Service (storing, processing, sending them to you, investigating problems, and checking claims from rights holders or violations of these Terms).

Article 17-2 (Handling of original songs)

1. Any audio data you upload as the original song must be audio data that you obtained lawfully. You must not upload, as the original song, audio data that you downloaded knowing it was distributed illegally.
2. The operator uses the original song only for the purpose in Article 4, paragraph 2, and will not publish it, distribute it, send it to users or anyone else, or use it to train AI models. Because the original song is deleted after measurement as set out in the next paragraph, the operator does not listen to it.
3. When the measurement of the original song is finished (including when it could not be measured), the operator immediately deletes the original song and the temporary files made for the measurement. If the measurement is not finished within 24 hours of upload because of a queue, a stop of the Service, or other reasons, the operator deletes them within about 1 hour after the 24 hours pass (if the Service is stopped, it deletes them when the Service restarts). Original songs are not included in the Service’s backups.
4. If the measurement could not be done, the screen says so. You can rebuild without the original song, or upload the original song again. A failed measurement does not count as a rebuild.
5. The operator keeps the measurement results of the original song for the same period as the audio files of that song (Article 20). You can delete the measurement results of the original song at any time with “Remove the original song” on the tempo page. Versions made before removal stay as they are. When you delete a song (Article 20, paragraph 5) or when songs are deleted because you delete your account (Article 24), the measurement results of the original song are deleted as well.
6. If a rights holder makes a claim about an original song or a version made using an original song, Article 18 applies with the necessary changes. In this case, the operator may delete the measurement results of the original song and stop rebuilds that use the original song.

Article 18 (Claims from rights holders)

1. A person who believes that audio files or a song infringe their rights may make a claim by contacting the operator, stating the name and contact details of the person making the claim, the right involved, information that identifies the song, and why they believe it is infringing.
2. When the operator receives a claim, it checks the contents and, if it decides there is a risk of infringement, may temporarily stop playback, rebuilding, and downloading of the audio files and song in question. If the infringement is clear, the operator may delete the audio files and song in question.
3. If the operator takes a measure under the preceding paragraph, it will notify the user by email of the measure and a summary of the claim. The user may send a response by contacting the operator within 14 days from the date of the notice. The operator passes the response to the person making the claim (hiding the user’s contact details unless the user agrees), checks both sides’ positions, decides whether to lift the stop or delete, and notifies both sides of the result.
4. During the procedure in this Article, songs are still deleted when the period in Article 20 passes.

Article 19 (Prohibited conduct)

1. When using the Service, you must not do any of the following.
   • (1) Uploading audio files that infringe the copyright, neighboring rights, portrait rights, privacy, or other rights of others, or audio files that violate the law
   • (1-2) Uploading an original song in breach of Article 17-2, paragraph 1
   • (2) Letting others use your sign-in link or signed-in device
   • (3) Lending, transferring, buying, or selling an account, or sharing it among several people
   • (4) Registering several Free plan accounts as one person, or by other means avoiding the limit on the number of songs you can make on the Free plan or the limit on the number of times in Article 15
   • (5) Saving the audio for playing on screen by using browser features, outside tools, or similar, and using it instead of downloading
   • (6) Continuously uploading audio files automatically by programs or similar, or otherwise putting excessive load on the Service’s server
   • (7) Improperly analyzing, altering, or interfering with how the Service works, or improperly accessing other people’s accounts or songs
   • (8) Intentionally using the trial again and again by deleting the trial cookie, using it again after the cookie expires, using another device or browser, or other means, or avoiding the limit on the number of trials (once per person) or the overall caps
   • (9) Any other act that violates the law, or is against public order or morals
2. If you do any of the acts in the preceding paragraph, the operator may limit features, suspend your account, or take other measures under Article 22. In particular, the acts in items 2 and 3 of the preceding paragraph lead to misuse by others and leaks of information, so they are strictly prohibited.

Article 20 (Keeping and deleting audio files and songs)

1. Audio files uploaded and songs made by paid plan users (including rebuilt versions and the audio for playback; the same applies below in this Article) are deleted automatically when 30 days have passed since the song was made.
2. Free plan users’ songs are shown on screen and kept for 7 days after they are made. Songs are deleted automatically when 7 days have passed since they were made. If you subscribe to a paid plan within 7 days of making a song, it is kept until 30 days have passed since it was made.
3. How long songs are kept depends on your plan at the time. If a paid plan ends (when the billing period ends after cancellation, after a refund, when payment fails, and so on), the preceding paragraph applies from that point, and songs for which 7 days have passed since they were made are deleted.
4. Automatic deletion may take about 1 hour. A song being made becomes subject to deletion after it is completed.
5. You can delete a song at any time with the delete button (×) in the song list. A deleted song cannot be restored.
6. Songs you have downloaded stay with you. The operator does not delete them, even after you cancel your plan or delete your account.
7. The operator will not publish or distribute audio files or songs. The operator also will not use them to train AI models. The operator listens to audio files and songs only when needed to investigate problems or to check claims from rights holders or violations of these Terms (Privacy Policy, Article 4).
8. Audio files or songs may be lost before the end of the storage period due to equipment failure or similar. Please also keep your original audio files and downloaded songs yourself.
9. Audio files and songs made in the trial can no longer be shown or played when 24 hours have passed since the song was made, and are deleted automatically (deletion is done within about 10 minutes after the 24 hours pass). Trial songs cannot be downloaded. If you sign in, trial songs are moved to your account only while that browser’s trial cookie is valid (within 24 hours of making the song). Paragraph 1 or 2 applies to a moved song depending on your plan at that time, and the storage period is counted from when the song was made in the trial. If you sign in on a browser without the trial cookie (including a browser or device other than the one used to make the trial song), or if 24 hours have passed since the song was made, the song cannot be moved.

Article 21 (Suspending or ending the Service)

1. If there is maintenance, a failure, heavy use, or another unavoidable reason, the operator may stop all or part of the Service or delay processing. The operator announces stops for maintenance on the Service in advance. In an emergency, the operator may not be able to announce it in advance.
2. The operator may end the Service. If it does, it will announce this by a notice to your registered email address and by posting on the Service at least 30 days before the end date, and will refund users who have billing periods left under Article 16, paragraph 1, item 2.

Article 22 (Suspension of use and other measures)

1. If you break these Terms, the operator may take the following measures to the extent needed, depending on the nature and seriousness of the violation and the need.
   • (1) A request to correct it
   • (2) Limiting some features (such as making new songs or downloading), or stopping or deleting the audio files and songs in question
   • (3) Stopping sign-in (suspending the account)
   • (4) Ending the paid plan
   • (5) Deleting the account
2. If the violation is minor, the operator first asks you to correct it, and takes the measures in item 2 and the later items of the preceding paragraph only if it is not corrected. However, in the case of the acts in Article 19, paragraph 1, item 2 or 3, a clear infringement of rights, unauthorized access, or other cases that need urgent action, the operator may take measures at once.
3. The operator deletes an account only if there is no prospect of correction even after the account is suspended. It gives notice at least 14 days before deletion, and during that time, arranges for you to receive, on request, songs not involved in the infringement of rights or similar. During this time, songs are still deleted when the period in Article 20 passes. However, this does not apply in an urgent case under the proviso of the preceding paragraph where it is unavoidable to protect the rights of others or the safety of the Service.
4. When the operator takes a measure, it notifies you by email of the measure and the reason in advance where possible, or promptly after the measure if advance notice is not possible.
5. If you object to a measure, please contact the operator. The operator will check what you say and, if the measure was not appropriate, will lift the measure and, if needed, give a refund or take other action.
6. Refunds when a paid plan is ended partway through a billing period by a measure under paragraph 1 follow Article 16, paragraph 1, item 3.

Article 23 (The operator’s liability)

1. If the operator causes damage to you through its intent or gross negligence, it will compensate for the damage.
2. If the operator causes damage to you through its negligence (other than gross negligence), the operator will also compensate for the damage in accordance with the law.
3. If a dispute arises between you and a third party over the use of audio files or songs (including distribution and publication), you are responsible for resolving it. However, the operator is responsible for any part of the dispute that is attributable to the operator.

Article 24 (Deleting your account)

1. You can delete your account from your account page at any time.
2. If you are not in a paid plan billing period, at the time of your request the operator deletes your account, your songs (audio files, songs made, and the measurement results of the original song), download records (except where a paid plan payment was made), sign-in status, and account information such as your email address. Deleted items cannot be restored.
3. If you request to delete your account during a paid plan billing period, automatic renewal stops at that point, and your account is deleted at the end of the billing period. You can keep using the paid plan until the end of the period, and the information in the preceding paragraph is deleted at the end of the period. We do not refund fees for the remaining period.
4. Deleting your account does not lead to the refund under Article 15. If you meet the conditions of the same Article and want a refund, please apply through the procedure in the same Article. If the refund ends the paid plan before the end of the billing period, the deletion in paragraph 2 is done at that point.
5. You can delete songs at any time under Article 20, paragraph 5, before or after requesting to delete your account.
6. Even after you delete your account, the information set out in Article 8, paragraph 6 of the Privacy Policy (payment records held by Link and Stripe, download records (where a paid plan payment was made), activity logs, records of consent and provision, matching hashes, and so on) is kept for the periods set out in the same policy.

Article 25 (Changes to these Terms)

1. The operator may change these Terms only in either of the following cases. Each time, the operator checks the need for the change and that the contents are reasonable.
   • (1) The change is in the general interest of users
   • (2) The change does not go against the purpose of these Terms and is reasonable in light of the need for the change, the appropriateness of the changed contents, and other circumstances
2. When changing these Terms, the operator sets the date the change takes effect (the “effective date”), and announces that these Terms will change, the changed contents, and the effective date by posting on the Service before the effective date. A change that is disadvantageous to you is also notified to your registered email address at least 30 days before the effective date.
3. A price increase applies, under Article 12, paragraph 4, from the first renewal time on or after the date it applies.
4. Changes that are materially disadvantageous to you (changes that disadvantage you in the number of songs you can make, downloads, how long songs are kept, refund conditions, the scope of compensation, the recipients of personal information, and so on, excluding wording fixes, corrections of errors, and other changes that do not affect your rights and obligations) do not apply to a period you have already paid for, and these Terms before the change apply until that period ends. If it is difficult to apply these Terms before the change, the operator will let you choose whether to agree to the changed Terms and keep using the Service, or to end the paid plan and receive the refund under Article 16, paragraph 1, item 4.
5. If you do not agree to a change, you can cancel your plan or delete your account before the effective date.

Article 26 (Notices and contact)

1. The operator gives notices to you by email to your registered email address or by posting on the Service.
2. For questions, claims, or refund requests about the Service, please contact the operator. It may take a few days to reply.

Article 27 (If part of these Terms is invalid)

Even if any provision of these Terms or any part of it is found invalid under the law, the other provisions and the other parts remain in effect.

Article 28 (Language, governing law, and jurisdiction)

1. For these Terms (including the pricing page and other pages that form part of the contract under Article 1, paragraph 3), the Japanese text is the official text. Even when a translation is provided (including the English pages and emails sent in English), if the contents differ, the Japanese text prevails.
2. These Terms are governed by the laws of Japan.
3. Any dispute about the Service will be resolved in a court that has jurisdiction under the law.

Appendix (Plan changes)

Fees: Lite monthly $9.99, Lite yearly $99, PRO monthly $24.99, PRO yearly $249 (for tax, see Article 8, paragraph 1). “Share left” means the time left in the billing period at the time of the change, divided by the length of that billing period. Rounding of fractions of less than 1 cent follows the payment provider’s calculation. The actual amount is shown on the screen where you confirm the change.

• A booked change applies as a whole at the next renewal time, even if part of it is an upgrade (Lite yearly → PRO monthly, PRO monthly → Lite yearly). If you want to use PRO right away, you can choose Lite yearly → PRO yearly (immediate).
• The monthly song cap goes down only with a booked change. If, after a booked change, the number of songs made that month is at or above the new cap, you cannot make new songs until the 1st of the next month. You can keep using the songs you have already made.
• Amounts paid for an immediate change made within the period in Article 15 are covered by the refund under the same Article.
• Example (when 12 days are left in a 30-day monthly billing period): For Lite monthly → PRO monthly, you pay ($24.99 - $9.99) × 12/30 = $6.00 at the time of the change, and $24.99 at the next renewal time. For Lite monthly → PRO yearly, you pay $249 - $9.99 × 12/30 = $245.00 at the time of the change, and, 1 year after the change, $249.

Pricing / Privacy Policy / Legal notice (Act on Specified Commercial Transactions)

The text when these Terms were first established is the 1st edition. The text of the 2nd edition (effective October 22, 2026) is the 2nd edition. The text of the 3rd edition (effective October 24, 2026) is the 3rd edition.