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Terms of Service

About the beta: PhraseTrainer is currently offered as a beta service. Specifications may change, the service may be temporarily suspended, and data may be reset without prior notice. Please understand that significant problems or defects may occur during the beta period.

These Terms of Service (the “Terms”) set out the conditions for using the pronunciation-practice service “PhraseTrainer” (the “Service”) provided by Katsuyasu Fukuda (trading as PhraseTrainer; “we,” “us,” or “the Operator”). Users (each a “User”) must agree to these Terms before using the Service.

Article 1 (Application)

  1. These Terms apply to all relationships between the Operator and the User concerning use of the Service.
  2. Individual rules and guidelines that the Operator posts within the Service form part of these Terms.
  3. If these Terms conflict with an individual rule, the individual rule prevails.

Article 2 (Registration)

  1. A person wishing to use the Service shall agree to these Terms and apply for registration by the method designated by the Operator.
  2. The Operator may refuse registration if it determines that any of the following applies to the applicant:
    • The applicant provided false information;
    • The applicant has previously been subject to action for violating these Terms;
    • The Operator otherwise determines that registration is not appropriate.

Article 3 (Account Management)

  1. The User shall manage their email address and password at their own responsibility.
  2. Accounts may not be lent, shared, or transferred to any third party.
  3. The Operator bears no responsibility for damages arising from unauthorized use of an account.

Article 4 (Fees and Payment)

  1. The fees, billing cycle, and payment method for paid plans are as set out on the Act on Specified Commercial Transactions disclosure page (in Japanese) and in the pricing information within the Service.
  2. Payment is made by credit card via Stripe.
  3. Subscriptions renew automatically unless cancellation is requested.

Article 5 (Cancellation and Refunds)

  1. The User may cancel a subscription at any time from My Page or the Stripe customer portal.
  2. After cancellation, the User may continue to use the Service until the end of the period already paid for. No pro-rated refunds are provided.
  3. A full refund is provided only if requested within 7 days of the first payment date. See the Act on Specified Commercial Transactions disclosure (in Japanese) for details.

Article 6 (Plan Changes)

  1. Plan upgrades take effect immediately, and the difference is billed on a pro-rated basis.
  2. Plan downgrades take effect from the next renewal date.
  3. Use exceeding the limits of the applicable plan (number of phrases, AI evaluations, recordings, etc.) is not permitted.

Article 7 (Prohibited Acts)

The User shall not engage in any of the following when using the Service:

  1. Acts that violate laws or public order and morals;
  2. Acts related to criminal activity;
  3. Acts that infringe copyrights, trademarks, or other intellectual property rights;
  4. Submitting a third party’s work to the Service by means that violate the terms of service of the platform distributing that content (including acquisition, recording, or extraction by any means other than officially provided download features or official APIs);
  5. Acts that infringe the rights or interests of the Operator, other Users, or any third party;
  6. Acts that place an excessive load on the Service’s servers or network;
  7. Reverse engineering, scraping, or unauthorized use of the API;
  8. Improper repeated use of the free plan via multiple accounts;
  9. Reselling or transferring the Service to a third party;
  10. Mass access or mass generation using automated tools;
  11. Any other act that the Operator deems inappropriate.

Article 8 (Handling of Submitted Content)

  1. The copyright in audio, video, and text uploaded to the Service by the User (“Submitted Content”) belongs to the User or the rightful rights holder.
  2. The User warrants that they hold the rights necessary to use the Submitted Content within the Service (that it is material the User created or recorded themselves, or material for which the User has lawfully obtained permission from the rights holder).
  3. The User shall use only material that falls within one of the following as Submitted Content:
    • Material recorded, filmed, or created by the User themselves;
    • Video or audio files that the User has lawfully obtained and possesses;
    • Material for which permission to use within the Service has been obtained from the rights holder;
    • Material published in the public domain or under a license that permits the User’s intended use (such as Creative Commons).
  4. The User shall not use, as Submitted Content, any material obtained from third-party-operated platforms such as streaming services, video-sharing services, or broadcasting services by means not permitted under that platform’s terms of service. The Service does not provide any feature to acquire or reference content directly from such platforms.
  5. The User shall handle, at their own responsibility, all rights matters associated with the use of Submitted Content, including copyright, portrait rights, and publicity rights. If any damage arises to the Operator or a third party as a result, the User bears all responsibility for it.
  6. If the Operator reasonably determines that Submitted Content violates any provision of this Article, it may delete the content or suspend the User’s account without prior notice to the User.
  7. The Operator may use Submitted Content to the extent necessary to provide and improve the Service (storage, conversion, AI processing, noise reduction, audio separation, and similar processing).
  8. The Service imposes a limit on the length of each item of Submitted Content (30 seconds by default). This is designed to limit use to short fragments necessary for learning purposes and to ensure the use does not serve as a substitute for, or redistribution of, the original content.

Article 9 (Change or Suspension of the Service)

  1. The Operator may change or suspend all or part of the Service without prior notice to the User in the following cases:
    • When performing scheduled or emergency maintenance;
    • In cases of force majeure such as earthquake, fire, power outage, or communication failure;
    • When the Operator otherwise determines that suspension or interruption is necessary.
  2. The Operator bears no responsibility for damages incurred by the User due to changes or suspension of the Service.

Article 10 (Use Restrictions and Deregistration)

If the User violates any provision of these Terms, the Operator may restrict use of the Service or delete the account without prior notice.

Article 11 (Withdrawal)

The User may withdraw from the Service at any time by the prescribed procedure. If the User is subscribed to a paid plan at the time of withdrawal, they must first complete the cancellation procedure.

Article 12 (Disclaimer)

  1. AI pronunciation evaluation, transcription, and explanation generation are for reference only, and their accuracy and completeness are not guaranteed. They do not certify any official qualification, examination, or language level.
  2. The Operator does not warrant that the Service fits the User’s particular purpose, that it has the expected functions or quality, or that it is free of errors or bugs.
  3. The Operator’s liability for damages based on non-performance or tort is limited to the amount of fees the User paid in the most recent one year, except in cases of the Operator’s willful misconduct or gross negligence.
  4. The Operator bears no responsibility for disputes arising between the User and other Users or third parties.

Article 13 (Notices)

Notices regarding the Service are given by display within the Service or by sending to the registered email address.

Article 14 (Changes to the Terms)

  1. The Operator may change these Terms with prior notice to the User when it deems necessary.
  2. The revised Terms take effect from the time they are posted within the Service or from a specified date.
  3. If the User does not agree to the revised Terms, they may withdraw. If the User continues to use the Service after the revised Terms are posted, they are deemed to have agreed to the changes.

Article 15 (Governing Law and Jurisdiction)

  1. These Terms are interpreted in accordance with the laws of Japan.
  2. In the event of a dispute concerning the Service, the district court or summary court having jurisdiction over the location of the Operator shall be the court of exclusive agreed jurisdiction for the first instance.

Article 16 (Contact)

For inquiries regarding these Terms, please contact us by email at [email protected]. The Operator’s full statutory disclosure (business name, registered address, and phone number) is provided on the Act on Specified Commercial Transactions disclosure page (in Japanese).

Article 17 (Claims of Rights Infringement)

  1. A rights holder who believes that Submitted Content infringes their copyright or other rights should contact:
  2. A claim should include information identifying the content at issue, materials showing the claimant’s rights, and the claimant’s contact details.
  3. After receiving a claim, the Operator will review its contents within a reasonable period and take measures such as deleting the content as necessary.

Related pages: Act on Specified Commercial Transactions disclosure (Japanese) / Privacy Policy
This is an English reference translation. In the event of any discrepancy, the Japanese version prevails.
Established: April 25, 2026
Last updated: May 4, 2026