Effective October 5, 2026.
Quiet Sudoku does not require registration or send gameplay data to the developer. It includes no advertising, analytics or tracking SDKs.
Saved games, notes, training attempts, completion records and preferences are stored locally. If you enable iCloud checkpoints, recent game and learning records sync through your Apple account. The developer cannot read your private iCloud data. Turning sync off stops transfers but does not delete existing cloud copies. Manage iCloud data and backups through your Apple account settings. Deleting the app removes local app data.
Reminders run locally with your permission. Disable them in the app or system notification settings. Sharing occurs only when you choose content and a destination using the system share sheet.
If you contact support, the information you choose to provide is used to respond to your request. Do not send passwords or sensitive information. Apple may process diagnostics according to your system privacy choices and Apple's privacy policy.
本应用无需注册，不向开发者发送解题数据，不使用广告、分析或跟踪 SDK。存档、笔记、练习与设置保存在本机。主动开启 iCloud 后，近期进度和学习记录通过你的 Apple 账户同步，开发者无法读取你的私人 iCloud 数据。关闭同步不会删除已有云端副本。删除 App 会移除本地数据，云端数据和设备备份请在 Apple 账户设置中管理。通知在获得许可后由本机安排，可随时关闭。分享仅由你通过系统分享菜单主动触发。联系支持时主动提供的信息仅用于响应你的请求。
Operator: Jintao Lv. Support page. Our support channel is public GitHub Issues, operated by GitHub under its own privacy policy. Please do not include personal or sensitive information in public issues.