# Privacy Policy – MosaikPro
**Effective date:** 2026-06-12 · **Provider:** LuJan Game Studio, Schüpfen, Switzerland · **Contact:** lujangamestudio@gmail.com
This app (`ch.mosaik.app`) is an offline puzzle game. The game itself runs entirely on your device; we operate **no server of our own** and store **no personal data on our own systems**. For advertising, the optional purchase and the cross-device leaderboard, however, the app integrates **Google services** that process data.
## 1. Data processed
**a) Locally on the device (never leaves the device):**
- Game progress, score and the daily free-game limit (in the app's local storage).
**b) Google AdMob (ads – free version only):**
- Device/advertising identifiers and usage data to serve ads. Before the first ad request we obtain your **consent** via the **Google UMP SDK** where legally required (e.g. EU/EEA). You can decline personalized ads.
**c) Google Play Games Services (leaderboard & cross-device score):**
- Your Play Games player ID and your cumulative score, to sync your score across your devices and show your anonymous rank ("rank X of N"). Sign-in is **optional**; without it, no rank is shown.
**d) Google Play Billing (one-time "unlock premium" purchase):**
- The purchase is handled entirely by **Google Play**. We receive **no** payment data, only whether the unlock exists.
## 2. Purposes
- Providing the game and the free/premium logic.
- Showing ads in the free version.
- Syncing the score and showing the anonymous leaderboard rank.
- Processing the optional one-time purchase.
## 3. Sharing / third parties
We do not actively share data with third parties. The Google services above process data as independent providers under their own privacy terms:
- Google Privacy Policy: https://policies.google.com/privacy
- Google AdMob / Ads: https://support.google.com/admob/answer/6128543
## 4. Legal basis & consent
Where consent is required (e.g. personalized ads in the EU/EEA), it is obtained via the consent form and can be withdrawn. Otherwise, processing is necessary to provide the app's features or based on legitimate interests.
## 5. Children
The app is not directed at children. We do not knowingly collect data from children.
## 6. Your rights
Depending on applicable law (Swiss revFADP / EU GDPR), you have rights of access, rectification, erasure and objection. You can reset advertising identifiers in your Android settings; your Play Games data is managed via your Google account.
## 7. Changes
We may update this policy. The current version is always available at the published URL.
## 8. Contact
LuJan Game Studio, Schüpfen, Switzerland — lujangamestudio@gmail.com