Sudokoro Privacy Policy
Effective August 22, 2026
Sudokoro can be used without a personal account. Optional web accounts and iOS Game Center identities can keep leaderboard history under one player profile. We do not sell personal data or use gameplay data for advertising or cross-app tracking.
Data we process
- When anonymous solve sharing is enabled, we receive the board ID, difficulty, result, mistake count, and solve time. This is used to calculate board pass rates and leaderboards.
- Optional web accounts store a username, salted password and recovery-code hashes, session information, and game history. Plain-text passwords and recovery codes are never stored.
- On iOS, Game Center provides an app-scoped player identifier and display name. Sudokoro verifies Apple’s signed identity proof and never receives your Apple Account password.
- If you use the web contact form, we store the name you provide, your email address, your message, and limited request metadata needed to prevent spam and respond.
- Cloudflare may process routine network information such as IP address and request metadata to deliver and protect the service.
Your choices
Anonymous solve sharing is off by default in the iOS app and can be changed in Settings. Signed-in solve history is stored as part of account functionality. Playing without an account remains available.
Retention and deletion
Anonymous aggregate results are retained without a device identifier. Account records remain until you delete the account from Account & Security. Deletion removes the profile, linked identities, sessions, solve history, leaderboard totals, and tip usage from Sudokoro.
Service provider
Sudokoro uses Cloudflare Workers and D1 to host the application, protect requests, and store game data. Cloudflare processes data under its own privacy and security commitments.