Terms & Conditions

Last updated: July 2026

Using the app

Grandmaster Sudoku is provided for personal, non-commercial use. You’re welcome to play, screenshot, and share your results — please don’t redistribute the app itself or attempt to reverse-engineer its puzzle generator or server.

Multiplayer conduct

Multiplayer rooms are meant to be a fair race. Please don’t use automated tools, bots, or exploits to solve puzzles or manipulate results. Rooms found to be abused may be closed without notice.

Purchases

Any optional purchases (such as the Grandmaster upgrade) unlock features for the device and account they were purchased on, subject to the app store’s own refund and purchase policies.

No warranty

The app is provided “as is.” We work to keep it reliable and bug-free, but we can’t guarantee uninterrupted service, particularly for multiplayer features that depend on network connectivity.

Changes

These terms may be updated occasionally; continued use of the app after an update means you accept the revised terms.

Contact

Questions about these terms can be sent to [email protected].