Privacy Policy
Last updated: June 2026
Privacy by design – in short
1×1 Master processes no personal data. There is no backend, no cloud sync, no user accounts and no advertising. All of your learning progress is stored exclusively on your device.
1. Controller
The controller within the meaning of the General Data Protection Regulation (GDPR) is:
Sascha Wagner
Karl-Lindner-Str. 7
86316 Friedberg
Germany
Email: info@appbuilders.pro
2. Data we collect
1×1 Master collects no personal data. There is no user registration, no email address, no password and no cloud synchronisation. Your learning progress, statistics and all practice data are stored exclusively locally on your device in the app's database (SwiftData) and never leave the device.
3. Apple App Store & Apple services
The app is distributed via the Apple App Store. Apple may collect device-related, non-personal statistics (e.g. app crashes, install counts). Apple processes this data in accordance with its own privacy policy. As the app provider, we only receive aggregated, anonymised reports.
You can disable sharing diagnostics data with Apple at any time in the iOS settings under Privacy & Security → Analytics & Improvements.
4. Third parties
1×1 Master uses no external SDKs, no analytics libraries, no ad networks and no tracking frameworks. No data whatsoever is transferred to third parties.
5. Your rights
Since we do not process or store any personal data, there is currently no data we could disclose, rectify or delete on request. If you still have questions, you can reach us at: info@appbuilders.pro
You have the right to lodge a complaint with a data protection supervisory authority. Which authority is competent depends on your place of residence or our company's registered office.
6. Changes to this privacy policy
We reserve the right to amend this privacy policy when necessary. The current version is always available in the app and on this page.