Effective date: 16 August 2026
Number Ninja is an educational app for practising mathematics.
The app stores the following information locally on your device:
This information is used only to provide the app’s features, such as showing progress and preserving settings.
Number Ninja allows Android’s standard backup functionality. If backup is enabled in your device or Google Account settings, the locally stored app data described above may be included in an encrypted backup managed by Android and/or Google.
The developer does not operate a server for these backups and does not independently access this backup data. Backup availability and handling are governed by your device settings and the applicable Google services.
Number Ninja does not create user accounts and does not collect, sell, share, or transmit personal data to the developer or to third parties.
The app does not use advertising, analytics, tracking SDKs, in-app purchases, or third-party login services.
Number Ninja does not request personal information from children. The app does not contain advertisements or commercial content.
You can delete locally stored app data at any time using Android settings:
Settings → Apps → Number Ninja → Storage → Clear data
Uninstalling the app also removes its local data. To remove a cloud backup, use the backup-management options in your Android device or Google Account settings.
If future versions add advertising, purchases, analytics, accounts, network features, or other data processing, this policy will be updated before those changes are released.
Number Ninja is developed by Yevhen Holtsev.
For privacy questions, contact: [makaveli.apps@gmail.com]