Terms of service
These terms explain the rules for using Sudoku Coach, including accounts, Coaching subscriptions, and service limits.
The service
Sudoku Coach provides Sudoku puzzles, deterministic solving guidance, educational lessons, progress records, and optional language-based coaching. It is an educational and recreational service, not a promise of a particular learning result or uninterrupted availability.
Accounts and plans
An account is optional for play and required for cross-device sync and paid access. Cancellation keeps access through the verified paid end date. Provider grace keeps access through its verified grace end; payment hold, expiry, or revocation ends it. A refund record alone changes access only when the provider also ends or revokes the subscription.
Acceptable use
Do not attack, scrape at disruptive volume, bypass plan controls, probe other users’ data, submit unlawful content, misuse coaching infrastructure, or interfere with the service.
Changes and termination
Features and these terms may change with reasonable notice. You can stop using the service at any time. Account deletion ends access to synced data but does not cancel an active subscription.