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Sabiowl Terms of Use

Last updated: 2 August 2026

Article 1 (Application)

These Terms of Use (the “Terms”) set out the conditions on which Sabiowl (the “Service”) is provided, and the rights and obligations between the operator of the Service and you as a user. By using the Service, you are treated as having read and agreed to these Terms in full.

Article 2 (Registration and account management)

  1. Using the Service requires signing in with a Google account or an Apple account.
  2. If you use guest mode, you can use some features without signing in, but your data is tied to a temporary session on our servers and may become inaccessible if you reinstall the app.
  3. You are responsible for managing the Google or Apple account used for authentication, and must not lend or transfer your account to a third party.
  4. If we find that an account is being used improperly, we may suspend or delete it without notice to you.

Article 3 (Age)

  1. The Service is recommended for users aged 13 and over.
  2. If you are a minor, please use the Service with the consent of your parent or guardian.

Article 4 (Fees and in-app purchases)

4-1. Basic fees

  1. The Service is provided free of charge in principle.
  2. Communication charges and device charges are your responsibility.

4-2. In-app purchases (introduced in v1.0.1)

  1. You may optionally purchase the in-app currency “Diamonds” within the Service (one-time purchases, treated as consumable items).
  2. For details of the items offered, including price, contents, delivery timing and refund handling, please see Legal & Consumer Information.
  3. In-app purchases are currently available on iOS only (Android support is planned for a future update).
  4. Purchases are made through the payment system of the Apple App Store, and Apple Inc. is responsible for the payment itself.
  5. Refunds for in-app purchases are handled by Apple under its own policies, not by us. Please use Apple’s refund process. This does not affect any rights you have under consumer protection law that applies to you.
  6. If a payment completes but the Diamonds are not reflected in your account, please contact us from “Settings → Contact” in the app, or at the email address shown in Legal & Consumer Information.

4-3. Use by minors

If you are a minor, please use the Service with the consent of your parent or guardian. To prevent accidental in-app purchases, we recommend using Apple’s “Screen Time → Content & Privacy Restrictions → iTunes & App Store Purchases” feature.

4-4. Price changes

We may change the prices of in-app purchase items by revising these Terms or by displaying the change in the app. A changed price applies to purchases made after the change takes effect.

Article 5 (Gamification elements)

The Service provides gamification elements to make habit-building enjoyable, including levels, experience points (EXP), characters, gacha, Diamonds, and coins.

  1. The gacha feature cannot be operated by paying cash directly. Gacha can only be performed using Diamonds or tickets obtained within the app. Diamonds can be obtained through free routes such as completing habits, and can also be purchased through the in-app purchases described in Article 4 (from v1.0.1).
  2. Gamification elements are for entertainment purposes and have no real-world monetary value and cannot be exchanged for money.
  3. The in-app currency “Diamonds” cannot be exchanged for money, transferred, or moved to another service outside the Service. This includes Diamonds acquired through in-app purchases; they can be used only within the Service.
  4. In-game data (EXP, levels, items, purchased Diamonds, and so on) is deleted in full when you delete your account, and cannot be restored.
  5. If we discontinue the Service, we cannot guarantee in-game data or any unused Diamond balance. We will give advance notice as an important announcement.

Article 6 (Prohibited conduct)

When using the Service, you must not:

  1. Act in violation of law or public order and morals
  2. Engage in conduct connected with criminal activity
  3. Interfere with the operation of the Service
  4. Gain, or attempt to gain, unauthorised access to servers, networks, or systems
  5. Reverse engineer, decompile, or modify the Service’s API or authentication system
  6. Hold multiple accounts as a single user in order to manipulate rankings or statistical data
  7. Impersonate another person, or register false information
  8. Defame, threaten, or harass other users
  9. Use the friend or message features for sales or promotional activity
  10. Engage in any other conduct that we judge to be inappropriate

Article 7 (Suspension of the Service)

  1. We may suspend or interrupt all or part of the Service without prior notice to you if we judge that any of the following applies:
    • We are carrying out maintenance of the Service
    • Providing the Service has become difficult due to force majeure such as earthquake, lightning, fire, power failure, or natural disaster
    • Computers or communication lines have stopped due to an accident
    • We otherwise judge that providing the Service is difficult
  2. We are not liable for any damage suffered by you or a third party as a result of such suspension or interruption.

Article 8 (Copyright and intellectual property)

  1. All copyright and intellectual property rights relating to the Service (including the application, its design, logos, and the character “Sabi”) belong to us or to the rightful rights holder.
  2. Copyright in the data you enter or create within the Service (habit names, notes, timeline events, and so on) belongs to you. However, we may use that data to the extent necessary to provide the Service and to carry out statistical analysis.
  3. You must not reproduce, republish, modify, redistribute, or commercially exploit the content of the Service without permission.

Article 9 (Usage restrictions and account removal)

  1. We may restrict all or part of your use of the Service, or delete your account, without prior notice if any of the following applies to you:
    • You have breached any provision of these Terms
    • It becomes clear that your registered information contains false statements
    • You do not respond to communications from us for a certain period
    • We otherwise judge your use of the Service to be inappropriate
  2. You can remove your own account at any time using the “Delete account” feature in Settings.

Article 10 (Disclaimer of warranties and limitation of liability)

  1. We make no warranty, express or implied, that the Service is free from errors, bugs, data loss, or infringement of third-party rights, or that the Service is fit for any particular purpose of yours.
  2. The Service is not a health, medical, or psychological treatment service. It is an entertainment and life-logging tool intended to support habit-building, and it is not a substitute for consulting a doctor or other professional. If you have concerns about your health, please consult a professional.
  3. We are not liable for any damage arising to you out of the Service. However, this exclusion does not apply where the contract between you and us (including these Terms) is a consumer contract under Japan’s Consumer Contract Act, or where mandatory consumer protection law applicable to you does not permit such an exclusion.
  4. Even in the cases described in the proviso to the preceding paragraph, we are not liable for damage arising from special circumstances (including where we or you foresaw, or could have foreseen, the occurrence of such damage).

Article 11 (Changes to the Service)

We may change, add to, or discontinue the contents of the Service with prior notice to you, and you agree to this.

Article 12 (Changes to these Terms)

  1. We may change these Terms at any time without notice to you where we judge it necessary.
  2. If you use the Service after these Terms have been changed, you are treated as having agreed to the changed Terms.
  3. If there is a significant change, we will notify you within the Service.

Article 13 (Handling of personal information)

The handling of personal information in the Service is governed by our separate Privacy Policy. For the handling of data associated with payment processing for in-app purchases, please see Article 11 of the Privacy Policy (Payment processing: Apple App Store and RevenueCat).

Article 14 (Notices and contact)

Notices and communications between you and us are made by the methods we specify (“Settings → Contact” in the app, or the contact details shown at the end of these Terms).

Article 15 (No assignment of rights or obligations)

You may not assign to a third party, or offer as security, your position under the usage agreement or any rights or obligations under these Terms, without our prior written consent.

Article 16 (Governing law and jurisdiction)

  1. These Terms are governed by and construed in accordance with the laws of Japan.
  2. If a dispute arises in relation to the Service, the courts of Japan shall have exclusive jurisdiction as the agreed forum.
  3. Nothing in this article limits any mandatory rights you have as a consumer under the law of your country of residence, including your right to bring proceedings in your local courts where that law so provides.

Contact

For enquiries about these Terms, please contact us from “Settings → Contact” in the Service’s app.

© 2026 Sabiowl. All rights reserved.
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