Stillstack Privacy Policy
In short: Stillstack has no accounts and we (Zavi Studio) do not collect your personal information. Your scores, coins and settings stay on your device. The game shows ads through Google AdMob, which collects device data as described below, and optional purchases are handled entirely by Google Play.
This policy explains what information is handled when you use the Stillstack Android app (the “App”), published by Zavi Studio (“we”, “us”). By using the App you agree to this policy.
1. Information stored on your device
The App saves the following locally on your device so the game works between sessions:
- Best score and daily tower results
- Coin balance, unlocked and selected themes
- Settings such as sound on/off and whether you have seen the first-run hint
- Whether you have purchased “Remove Ads”
This data is never sent to us or to any server we run. It is deleted when you clear the App’s data or uninstall it.
2. Advertising (Google AdMob)
The App is free and supported by ads served by Google AdMob. To show ads, measure them and prevent fraud, Google may collect and process:
- Your device’s advertising ID
- IP address and approximate location derived from it
- Device and app information (model, operating system version, language, app version)
- Ad interactions (impressions, clicks) and diagnostic data
If you are in the European Economic Area, the United Kingdom or Switzerland, the App asks for your consent through Google’s consent message before personalised ads are shown. You can change your choice at any time from Settings → Privacy settings inside the App. Anywhere, you can limit ad personalisation or delete your advertising ID in your device’s Android settings (Settings → Privacy → Ads, or Google → Ads).
Learn more: How Google uses information from apps that use its services and the Google Privacy Policy.
3. In-app purchases (Google Play Billing)
The optional “Remove Ads” purchase is processed by Google Play. We never see or store your payment details. The App only receives confirmation from Google Play that the purchase was made, so it can turn off interstitial and banner ads. Google’s handling of payment data is covered by the Google Payments Privacy Notice.
4. Google Play Games (optional)
If you use the leaderboard, the App uses Google Play Games Services. Google may process your Play Games player ID, gamer name and the scores you submit, which are shown on the leaderboard to other players. This is governed by the Google Privacy Policy. You can manage your Play Games profile and visibility in the Google Play Games settings.
5. Sharing your tower
When you tap “Share tower”, the App creates an image of your tower on your device and hands it to the app you choose (for example a messaging app). Nothing is uploaded by us; what happens next is controlled by the app you share to.
6. Summary of third parties
| Service | Purpose | Data |
|---|---|---|
| Google AdMob & User Messaging Platform | Ads, consent | Advertising ID, IP address, device info, ad interactions |
| Google Play Billing | Remove Ads purchase | Purchase confirmation (payment handled by Google) |
| Google Play Games Services | Leaderboard (optional) | Player ID, gamer name, submitted scores |
We do not sell your information, and we do not use any analytics or crash-reporting service of our own.
7. Permissions
The App requests internet and network-state access (to load ads and verify purchases), vibration (for haptic feedback in the game) and the advertising ID permission (added by AdMob). It does not request access to your contacts, camera, microphone, location or files.
8. Children
The App is not directed to children under 13, and we do not knowingly collect personal information from them. If you believe a child has provided information through the App, contact us and we will help remove it.
9. Data retention and deletion
We hold no data about you on our side, so there is nothing for us to delete. On-device data is removed when you uninstall the App or clear its data. Data collected by Google is retained under Google’s policies; you can reset or delete your advertising ID at any time in your device settings.
10. Security
Data saved by the App stays in the App’s private storage on your device. Communication with Google services uses encrypted connections.
11. Changes to this policy
We may update this policy when the App changes. The new version will be posted on this page with an updated effective date.
12. Contact
Questions about this policy or the App: zavistudioinfo@gmail.com