Privacy Policy
Last updated 12 October 2026
This policy covers Numbers3D (the game published under that name on
Google Play and the App Store, playable in the browser on this site, and available for desktop;
bundle identifier com.mikepenz.numbers3d) and this website at numbers3d.mikepenz.dev.
The game collects no data. There is no account, no sign-in, no remote analytics, no advertising, no crash reporting and no tracking SDKs. Nothing you do in the game is sent to us.
What stays on your device
Progress, statistics, streaks, daily results, saved runs and your settings are written to ordinary
app storage on the device you play on: a preferences file on Android, the app’s own
NSUserDefaults suite on iOS and macOS, the system preferences store on the desktop builds, and browser
storage in the web version. None of it is transmitted. Uninstalling the app, or clearing this
site’s data in your browser, deletes it.
Device backups
On Android the app opts out of Auto Backup, so its data is not copied to your Google account. On iOS and macOS, Apple’s iCloud or encrypted device backup may copy the local file into your own account so a new device restores your progress. That is a setting on your device, not something the game asks for, and the copy is held by Apple under its terms, so we cannot read it.
Notifications
The daily reminder is optional and off until you switch it on. It is scheduled locally by the operating system; there is no push server and no device token leaves the device. Android asks for the notification permission only when you switch the reminder on, and the app re-arms the reminder after a reboot (the boot permission) only while it is on.
This website
The site sets no cookies and runs no analytics. Three parties do see something when you load a page, and none of them are us:
- Cloudflare serves the site as a CDN and keeps edge logs (IP address, user agent, requested URL, timestamp) for security and operations: Cloudflare privacy policy.
- Uberspace hosts the files and keeps the usual web-server logs: Uberspace privacy policy.
- Google Fonts delivers the webfonts these pages use, which means your browser requests them from Google and Google sees the IP address that asked: Google privacy policy.
We do not store or have access to those providers’ logs. The game at play.html checks for updates when online; once cached, it can run offline.
The app stores
If you installed the game from a store, that store collects installation, device and crash information under its own policy, and reports aggregate figures to us as the developer. We never receive anything that identifies you. See Google Play and Apple.
Children
The game is suitable for all ages and collects no data from anyone, children included.
Your rights
We do not store personal data about your gameplay or have access to the provider logs described above. For questions about data connected to this website, contact us at [email protected]. For data held by Google or Apple through their stores, you can also contact them directly.
Changes
If this policy changes, the date at the top changes with it. Material changes will be noted in the app’s release notes.
Contact
Mike Penz, Austria. [email protected]. Help with the game: [email protected]. See also the Terms & Legal Notice.