Terms of use
These terms of use ("Terms") set out the conditions for using "myBESToneQA 一問一答" (the web version and the app versions installed from Google Play or the App Store; the "Service"), provided by Shunya Hiwatashi (the "Operator"). By using the Service, you agree to these Terms.
On this page
1. Scope
These Terms apply to every relationship between the Operator and users concerning the Service. The privacy policy and the AI point sales conditions and legal notice (/privacy/ai-sales/) also form part of these Terms.
2. Fees
Study features such as creating cards, reviewing, exporting and backups are free. On the web version, AI features beyond the free trial require purchasing AI points. Prices, amounts, expiry and refunds of AI points are set out on the sales conditions page (/privacy/ai-sales/).
3. Use by minors
If you are a minor, please get a parent or guardian's consent before using the Service. AI features and AI point purchases are subject to the age requirements and parental consent steps shown on screen.
4. Your study data
Study data is stored on your device and not on the Operator's servers (except content you choose to send with the web version's AI features). Data can be lost if a device breaks, the app is deleted or browser data is cleared, so please export backups regularly.
5. AI features (web version)
- AI answers and card suggestions may contain errors or inaccuracies. Check them before relying on them for study or decisions.
- Do not send personal information, material that infringes others' rights, or material you are not permitted to share.
- To prevent misuse, the Operator may limit usage or temporarily suspend AI features.
6. Prohibited conduct
You must not:
- break the law or act against public order and morals;
- infringe copyright or other rights of others (including copying and distributing commercial study materials without permission);
- place excessive load on the Service's servers or network, access it without authorisation, or bypass usage limits;
- impersonate others or log in with someone else's email address;
- otherwise cause harm to the Operator or third parties.
7. Changes and suspension
The Operator may change the Service or suspend or end it. Important changes or an end of the Service will be announced on this site in advance where possible. Unused AI points on the end of sales are handled according to the sales conditions page and the law.
8. Disclaimer
The Operator does not guarantee that the Service fits your particular purpose, that you will achieve study results, or that it will be free of errors or interruptions. Except in cases of the Operator's intent or gross negligence, the Operator is not liable for damages arising from use of the Service. Where the Operator is liable under applicable law, except for intent or gross negligence, liability is limited to the amount you paid the Operator in the month the damage occurred.
9. Changes to these Terms
The Operator may change these Terms when necessary. Before a change takes effect, the new content and its effective date will be posted on this page.
10. Governing law and jurisdiction
These Terms are governed by the laws of Japan. Any dispute concerning the Service is subject to the exclusive jurisdiction, in the first instance, of the district court with jurisdiction over the Operator's address.
11. Translations
The Japanese text of these Terms is authoritative. Other language versions are reference translations; if they differ, the Japanese version prevails.
Contact
For questions about these Terms, please use the contact details on the Contact page.