Terms of Use

Last updated: 2026-09-25

These Terms of Use ("Terms") govern your use of Kaizen Sudoku ("the app"), provided by Süleyman Ateş, İstanbul, Türkiye. By downloading or using the app you agree to these Terms and to the terms of the store you downloaded it from (Apple's Licensed Application End User License Agreement or the Google Play Terms of Service).

1. Licence

We grant you a personal, non-exclusive, non-transferable, revocable licence to use the app on devices you own or control, for personal, non-commercial purposes.

2. Free use

The app is free to download and play and contains no advertising. Some content and features are available through optional purchases.

3. Optional purchases

All Themes (one-time): unlocks all premium themes, including themes added in future updates.
Lifetime Premium (one-time): all themes plus unlimited hints and unlimited continues at the mistake limit.
Credit packs (consumable): each credit can be used once as a hint or a continue. Credits have no cash value, are not transferable and are not restored after use.

There are no subscriptions. Payment is charged to your Apple ID or Google account when you confirm the purchase. Refunds are handled by Apple or Google under their policies; we cannot issue refunds directly. Features included in a one-time purchase are provided for as long as the app is offered.

4. Acceptable use

You agree not to reverse-engineer, decompile or modify the app, not to circumvent its purchase mechanisms, and not to use it in any unlawful way or interfere with its operation.

5. Intellectual property

The app, including its design, themes, artwork, name, logo and puzzle generation, is owned by Süleyman Ateş or its licensors. These Terms give you no ownership rights.

6. Changes and availability

We may update, change or discontinue the app or any feature, and may update these Terms. Material changes will be announced in the app; continuing to use the app after a change means you accept it.

7. Disclaimer and limitation of liability

The app is provided "as is" and "as available", without warranties of any kind. To the maximum extent permitted by law, we are not liable for indirect, incidental or consequential damages or loss of data, and our total liability does not exceed the amount you paid for the app in the twelve months before the claim. Nothing in these Terms limits rights you have as a consumer under mandatory law.

8. Governing law and contact

These Terms are governed by the laws of Türkiye, without prejudice to mandatory consumer protection rules of your country of residence. Questions: sudokukaizen@gmail.com.