Privacy Policy
Last updated: February 27, 2026
This policy applies to all mobile applications published by Kartega, including Number Grid Eraser, My Hidden Lucky Number, and Biotrack.
1 Personal Data Storage
Our applications do not require you to create an account. Kartega does not collect, store or process personally identifiable information at the server level. Any in-app actions are processed locally on your device and are not transmitted to our servers.
2 Advertising
All of our apps are ad-supported and free to use. Third-party advertising networks (such as Google AdMob or similar providers) may receive certain technical signals from your device for the purpose of serving and measuring ads.
These signals may include anonymous or semi-anonymous data such as:
- Device type and operating system version
- Approximate location (region-level)
- Advertising identifier (e.g. IDFA or GAID)
- Language preference and app interaction events
This data is not held by Kartega as a user profile. It is processed by the respective ad network under their own privacy terms.
3 Cookies & Similar Technologies
Our mobile apps do not use browser cookies. Advertising and analytics SDKs integrated in the apps may use their own technical identifiers (e.g. device IDs or session tokens) for ad delivery quality, crash reporting and app stability measurement.
4 Children's Privacy
Our applications are intended for a general audience. We comply with applicable platform policies (Google Play Families Policy, Apple App Store Guidelines) regarding advertising and data collection for users under the age of digital consent in relevant jurisdictions.
5 Third-Party Services
Third-party services integrated in our apps — including advertising, analytics or crash reporting SDKs — operate under their own privacy terms. We encourage you to review the relevant policies of these providers independently.