Privacy Policy – CyberGrid
Last updated: 8 November 2026
This policy covers the Android game CyberGrid – Minesweeper (package name de.timhaller.cybergrid), distributed through Google Play. It does not cover this website – for that, see the privacy policy of cybergrid.rellit.de.
1. Controller
The controller within the meaning of the General Data Protection Regulation (GDPR) is:
Tim Haller
Beethovenstraße 9
64347 Griesheim
Deutschland
Email: mail@timhaller.de
No data protection officer has been appointed; the statutory conditions for doing so are not met.
2. The short version
The game collects no personal data. There is no server, no user account, no sign-up and no login. No advertising, analytics or crash reporting SDK is embedded, and there are no in-app purchases.
The game requests one single Android permission: making the device vibrate (section 4). It does not request internet access. Without that permission an Android app cannot open a network connection. So the game cannot transmit any data at all, neither to me nor to third parties; it works entirely offline.
Personal data arises solely through distribution via Google Play, and it does so at Google, under Google's own responsibility (section 6).
3. Data that never leaves your device
The game stores two files in its private app storage:
| What is stored | Why |
|---|---|
Settings (settings.cfg): music and sound effects volume (0–100 % each), chosen music track, chosen difficulty level, whether vibration and question marks are on, whether the guide has been shown once, and the best time per level | so your choices are kept for the next start, the guide only opens by itself before the first game, and the game can show you your best time |
Game in progress (savegame.cfg): the board as it currently stands – level, size, where the mines are, which cells are open, flags and question marks, the time elapsed and the state of the random generator | so “Continue” in the menu picks the game up at the same place, even after the app was closed |
That is all. Neither file ever leaves your device; they contain no name and no identifier, allow no conclusions about you as a person and cannot be read by other apps. They are deleted when you uninstall the game or clear its data in Android's settings.
The legal basis for storing them on your device is Section 25(2) No. 2 of the German TDDDG: the storage is strictly necessary for the game to keep the settings you chose and to continue the game you started. No consent is required for it.
Android's system backup does not capture the files either. The game is excluded from automatic cloud backup (allowBackup="false"). So your settings, your best times and your game in progress do not end up in a Google Drive backup merely because that option is on in the system.
4. Permissions
The game requests one permission:
VIBRATE– for the short buzz when you mark a cell by holding it. The permission allows nothing beyond driving the vibration motor; it reads nothing and transmits nothing. The game's settings switch it off.
In particular, it does not request:
INTERNET– there is no network connection.AD_ID– there is no advertising and no access to the advertising ID.- Location, contacts, camera, microphone, phone state, notifications.
- Storage permissions – the game reads and writes only within its own app storage.
You can verify this yourself: in your phone's app details under “Permissions” and in the Play Store listing under “About this game”.
5. The link to this website
The “About” dialog in the menu contains a link to cybergrid.rellit.de. If you tap it, Android hands the address to your browser, and only your browser then loads the page – the game itself transmits nothing. Your visit to the website is covered by the website's privacy policy, in particular its section on server log files. If you do not tap the link, no connection takes place.
6. Distribution through Google Play
The game is distributed through Google Play. When you download, update and use the store, Google processes data under its own responsibility – such as your Google account, installation data and, if you have allowed this in Android's settings, the system's crash and diagnostic reports. I have no influence over that; Google's privacy terms apply.
Provider: Google Ireland Limited, Gordon House, Barrow Street, Dublin 4, Ireland
In the Play Console I see aggregated statistics only, such as installations per country or device type and the number of crashes. I cannot draw conclusions about individual people from them. Reviews you post in the store are public and visible to me, as to everyone else, under your Google profile name.
7. What the game does not do
For clarity, because apps are often assumed to do otherwise:
- No analytics tool is used – no Firebase Analytics, no Google Analytics, no comparable SDK.
- No crash reporting service such as Crashlytics is integrated.
- No advertising is shown and no advertising ID is read.
- There are no in-app purchases and no Google Play services in the game.
- There is no user account, no registration, no login.
- There are no online features: no online leaderboard, no chat, no network play. Your best times stay on your device.
- How often, how long or how well you play is not transmitted to me or to anyone else – the settings and saved game from section 3 stay on your device.
- No data is passed on or sold to third parties.
8. Retention
Settings, best times and the game in progress remain on your device until you uninstall the game or clear its data; the saved game is also overwritten whenever you start a new one. There is no storage on my side. For data arising at Google in connection with the store, Google's own retention periods apply.
9. Your rights
Under the GDPR you have the following rights: access (Art. 15), rectification (Art. 16), erasure (Art. 17), restriction of processing (Art. 18), data portability (Art. 20) and objection to processing (Art. 21).
One practical note: since I store no personal data about you, I can neither provide information about you nor delete anything – there simply is nothing on file. You delete the settings, best times and saved game by uninstalling the game or clearing its data. For data arising at Google in connection with store use, please address your request to Google directly.
You also have the right to lodge a complaint with a data protection supervisory authority (Art. 77 GDPR). The authority of your place of residence is competent, as is the one responsible for me:
Der Hessische Beauftragte für Datenschutz und Informationsfreiheit
Gustav-Stresemann-Ring 1
65189 Wiesbaden, Germany
Phone: +49 611 1408-0
Email: poststelle@datenschutz.hessen.de
Web: datenschutz.hessen.de
10. Children
The game collects no personal data from anyone – children included. It contains no advertising, no purchases, no online or chat features and no outbound link other than the one reference to this website in the “About” dialog (section 5).
11. Changes to this policy
This policy is updated whenever the game or the legal situation changes – for a new feature that processes data, before that version reaches the store. The current version is always available at this address. The “last updated” date above shows when something last changed.
12. Contact
For questions about privacy in this game: mail@timhaller.de