Terms of Service

These Terms of Service (the “Terms”) set out the conditions for using the application “Abstract Thinking Trainer” (the “App”), provided by hecuhecu (the “Provider”). Users of the App (each a “User”) must agree to these Terms before using the App.

Section 1 Application of These Terms

  1. These Terms apply to every relationship between the User and the Provider arising from use of the App.
  2. Any individual rules, usage notices, or guidelines that the Provider posts within the App from time to time form part of these Terms. If there is a conflict between these Terms and such individual rules, the individual rules prevail unless stated otherwise.

Section 2 Registration

  1. To use the App, the User agrees to these Terms and registers in the manner specified by the Provider. Registration with an anonymous account is included.
  2. By linking an Apple account, the User can carry over learning records and subscription status when changing devices or reinstalling. Linking is optional.
  3. The Provider may decline a registration if it determines that the applicant falls under any of the following:
    • The applicant submitted false information
    • The application comes from someone who has previously breached these Terms
    • The Provider otherwise considers the registration inappropriate

Section 3 Use by Minors

A minor who uses the App must obtain the prior consent of a parent or other legal representative. The same applies to purchasing a paid plan.

Section 4 What the App Provides

  1. The App provides practice opportunities for moving between the concrete and the abstract.
  2. The App does not guarantee any improvement in thinking ability, academic performance, work performance, or any other ability. Results of practice vary from person to person.
  3. The App is not intended for medical care, diagnosis, or treatment, and does not diagnose, treat, or prevent any disease. The word “diagnosis” used inside the App refers to a simple assessment of tendencies used to adjust which questions are presented; it does not mean a medical diagnosis.

Section 5 Questions and Explanations

  1. The questions and explanations in the App are created by the Provider (including through the use of generative AI) and are checked before publication.
  2. Notwithstanding the preceding item, the Provider does not guarantee the accuracy or completeness of the questions and explanations. If a User has doubts about any content, please contact the Provider through the in-app reporting feature or the contact point in Section 19.
  3. Copyright and other rights in the questions, explanations, and other content of the App belong to the Provider or the rightful rights holder.

Section 6 Use of AI in Deep Mode

  1. In Deep Mode, written answers entered by the User may be sent to an external AI service for scoring and feedback.
  2. The handling of the transmitted content follows the separately published Privacy Policy.
  3. The User must not enter personal information, confidential information, or any information that infringes the rights of a third party into a written answer.
  4. Scoring and feedback produced by AI are provided for reference only, and their accuracy is not guaranteed.

Section 7 Paid Plan

  1. The core training features of the App are free to use. Some features require a paid plan (the “Premium Plan”), including AI feedback and AI dialogue (full version), Why-type thinking training, and viewing records for the full period.
  2. The thinking-ability assessment in onboarding and the display of its results are available without a paid plan.
  3. The Provider may change the scope of what is available free of charge, as indicated within the App.

Section 8 Price and Payment for the Paid Plan

  1. The prices of the Premium Plan are as follows.

    Plan Length Price
    Annual plan 1 year $70.00 / year
    Monthly plan 1 month $10.00 / month

    Prices shown above are for the United States App Store. In other regions, prices are shown in the local currency on the App Store and may differ.

  2. The annual plan includes a 7-day free trial. The free trial applies only to Users who have not previously used a free trial of the App.
  3. If auto-renewal is not turned off at least 24 hours before the end of the free trial period, the annual plan price is charged at the end of that period. Any unused portion of a free trial period is forfeited when the User purchases a subscription.
  4. The monthly plan and the annual plan are auto-renewing subscriptions. The subscription renews automatically unless auto-renewal is turned off at least 24 hours before the end of the current period. The account is charged for renewal within 24 hours prior to the end of the current period, at the price stated above.
  5. Payment is charged to the payment method registered to the User’s Apple ID account upon confirmation of purchase.
  6. The User can manage a subscription and turn off auto-renewal in Account Settings on the device after purchase: the iOS Settings app > the User’s name > Subscriptions.
  7. The Provider may change prices. The Provider will notify Users in advance of material price changes, within the App and by other appropriate means.

Section 9 Cancellation and Refunds for the Paid Plan

  1. Auto-renewal can be turned off in the iOS Settings app > the User’s name > Subscriptions.
  2. After cancellation, Premium features remain available until the end of the current billing period. No pro-rated refund is given for a partial period.
  3. All purchases are processed by Apple. Refunds follow Apple’s policy; please request a refund through Apple’s support page (https://reportaproblem.apple.com/). The Provider cannot issue refunds directly.
  4. Because the Provider does not process payments, the Provider cannot cancel, change, or reverse a purchase. All such requests must be made to Apple.

Section 10 Prohibited Conduct

When using the App, the User must not do any of the following.

  1. Acts that violate laws or public order and morals
  2. Acts related to criminal activity
  3. Acts that infringe the intellectual property rights, privacy, reputation, or other rights and interests of the Provider or a third party
  4. Acts that destroy or interfere with the functioning of a server or network of the Provider or a third party
  5. Acts that may interfere with the operation of the App
  6. Unauthorized access, reverse engineering, or analyzing or modifying the features the App provides
  7. Reproducing, publishing, selling, or distributing the questions, explanations, or other content of the App without the Provider’s permission
  8. Posting to “Community Answers” any content that constitutes defamation, bullying, or harassment of others; personal information about oneself or a third party (real name, school, employer, contact details, address, and the like); spam or advertising; or any other content contrary to public order and morals
  9. Directly or indirectly providing a benefit to organized crime groups (including crime syndicates, their members and associate members, affiliated companies, corporate racketeers, and groups posing as social movements)
  10. Any other act that the Provider determines to be inappropriate

Section 11 Community Answers

  1. Through the App’s “Community Answers” feature, the User can share their own answer anonymously with other Users. Sharing happens only when the User chooses it at the time of posting.
  2. If a post falls, or may fall, under the prohibited conduct in the preceding section, the Provider may hide or delete the post without prior notice.
  3. When the Provider receives a report about a post, it reviews and responds promptly. On the device of the User who filed the report, the post is hidden immediately, without waiting for that review.
  4. A User can block a particular poster. Posts from a blocked poster are no longer shown to that User.
  5. A User can withdraw a shared post at any time. A withdrawn post is no longer displayed, but the Provider retains a record of it for a certain period for the investigation of misuse and for operational auditing.
  6. Copyright in a post belongs to the User. However, the User grants the Provider a royalty-free right to use the post (to reproduce, display, and adapt it) to the extent necessary to provide, improve, and introduce the App.

Section 12 Suspension of the App

  1. The Provider may suspend or interrupt all or part of the App without prior notice to Users if it determines that any of the following applies:
    • Maintenance, inspection, or updating of the systems behind the App
    • Force majeure such as earthquake, lightning, fire, power failure, or natural disaster making it difficult to provide the App
    • A computer or communication line stopping due to an accident
    • The Provider otherwise determines that providing the App is difficult
  2. The Provider is not liable for damage suffered by a User as a result of a suspension or interruption under this Section, except where the Provider acted intentionally or with gross negligence.

Section 13 Restriction of Use and Cancellation of Registration

  1. If a User falls under any of the following, the Provider may, after prior notice except where there is good reason not to give it, restrict all or part of the User’s use of the App or cancel the User’s registration. Where the Provider determines the matter to be urgent, it may act without prior notice.
    • The User has breached any provision of these Terms
    • Registration details are found to contain false information
    • The Provider otherwise determines that the User’s use of the App is inappropriate
  2. The Provider is not liable for damage suffered by a User as a result of any action taken by the Provider under this Section, except where the Provider acted intentionally or with gross negligence.

Section 14 Withdrawal

  1. A User may withdraw from the App at any time using the in-app withdrawal (account deletion) feature.
  2. Upon withdrawal, data associated with the User (learning records, answer history, and the like) is deleted.
  3. If the User has an active paid plan, the User must separately cancel the subscription in accordance with Section 9; withdrawal alone does not cancel it.

Section 15 Disclaimer of Warranties and Limitation of Liability

  1. The Provider makes no warranty, express or implied, that the App is free from defects in fact or in law (including defects, errors, or bugs relating to safety, reliability, accuracy, completeness, effectiveness, fitness for a particular purpose, or security, and including infringement of rights).
  2. The Provider is not liable for any damage suffered by a User arising from the App, except where the Provider acted intentionally or with gross negligence.
  3. Notwithstanding the preceding item, where the Provider is liable to a User for damages, the amount of compensation is limited to the total amount of fees for the App that the User paid to the Provider in the most recent 12 months.

Section 16 Changes to the App

  1. The Provider may add to, change, or discontinue the content of the App. Where a change is material, the Provider will endeavor to notify Users in advance of the content of the change and the date it takes effect, by display within the App or by other appropriate means.
  2. The Provider is not liable for damage suffered by a User as a result of a change under this Section, except where the Provider acted intentionally or with gross negligence.

Section 17 Changes to These Terms

  1. The Provider may change these Terms without the individual consent of Users in the following cases (Article 548-4 of the Civil Code of Japan):
    • The change to these Terms is in the general interest of Users
    • The change to these Terms does not conflict with the purpose of the contract and is reasonable in light of the need for the change, the appropriateness of the changed content, and the circumstances of the change
  2. When changing these Terms, the Provider will set the date on which the changed Terms take effect and will announce the content of the change and that date, by display within the App or by other appropriate means, before that date.
  3. If a User uses the App on or after the effective date, the User is deemed to have agreed to the changed Terms.

Section 18 Handling of Personal Information

The Provider handles personal information obtained through use of the App appropriately, in accordance with the separately published Privacy Policy.

Section 19 Contact

For inquiries about the App or these Terms, please contact:

Section 20 Governing Law and Jurisdiction

  1. These Terms are governed by and construed in accordance with the laws of Japan.
  2. In the event of a dispute concerning the App, the district court having jurisdiction over the location of the Provider shall be the exclusive court of first instance by agreement of the parties.

Effective date: August 11, 2026 Last updated: August 30, 2026