Privacy policy
How Not Bad Sudoku handles app data, and the choices you have.
1. Operator and scope
Not Bad Sudoku is provided by 杭州幻橙网络科技有限公司. This policy covers its offline Sudoku features and this website. No account is required. You do not need to provide your name, telephone number, location or payment details to play.
For privacy questions and support, email support@oranix.cn. See our support page for common questions.
2. Data used by the app
| Data or capability | Purpose and handling |
|---|---|
| Puzzles and game progress | Puzzle layouts, entered digits, notes, elapsed time, mistakes and undo history are stored on the device to continue games. |
| Library progress, statistics and settings | Completion records, game history, appearance and layout preferences are stored locally to show statistics and restore preferences. |
| Clipboard | Read only when you choose to import puzzle text or a seed; written when you choose to copy a puzzle or seed. The app does not monitor the clipboard in the background. |
| Optional holding-hand status | Automatic left/right layout is off by default. When enabled, system-provided holding-hand status is processed on the device to adjust the layout, not to identify you. The subscription stops when disabled or when the app goes into the background. Manual layout remains available on unsupported devices. |
| Local diagnostic logs | The app may write local system logs to help diagnose errors. It does not implement automatic uploading of diagnostic logs. |
3. Network services, third parties and backup
The current app has no developer-operated backend, sign-in, payment, advertising or analytics service, and no third-party SDK for those purposes. It uses HarmonyOS system capabilities for storage, clipboard access and optional hand awareness.
The app allows system backup and restore. Whether backup is enabled, where it is stored, how it is transferred and how long it is retained depend on your system services and device settings. Local storage therefore does not mean that system backups never transfer data. Please manage backups through your system service.
4. Retention and your choices
Progress, statistics and settings remain on your device until overwritten, cleared or removed when the app is uninstalled. You can clear app data through system app management; doing so removes local progress and preferences. Manage any system backup copies separately through the relevant system service.
You can disable automatic left/right layout in settings. Without choosing import or copy, you do not trigger the app's clipboard features. The developer has no backend copy of your local Sudoku records and cannot retrieve or restore them from a server.
You can contact us to request explanations or help with data handling, or to request access, correction or deletion of information you sent to support. If you send an email, your address, message and attachments will be used to handle and reply to the request. We keep this correspondence only as needed to provide support, resolve related issues and meet applicable requirements. Please do not include passwords, identity documents, unrelated personal information or sensitive full system logs.
5. Younger users
Younger users may use the app with a parent or guardian's guidance. Playing does not require identity, contact or payment information. The final age rating will be shown by the app store.
6. This website
Our website code provides no account, advertising or analytics service and sets no tracking cookies. All fonts and images are local or provided by your device. The rule illustration works only in your browser and does not upload your interactions.
This website is hosted on GitHub Pages. GitHub records visitors’ IP addresses for security, even without a GitHub sign-in. See GitHub Pages data collection. GitHub may process hosting-related data in the United States and other locations. Its retention periods depend on processing purposes and legal obligations; we do not set or promise a fixed number of days. See the GitHub Privacy Statement for its handling and privacy contacts.
7. Changes and contact
If network features, accounts, payments, advertising or other third-party services are added, we will update this policy and provide notice as applicable. Significant changes will be highlighted appropriately.
Operator: 杭州幻橙网络科技有限公司
Contact: support@oranix.cn
Support: Help & support