Privacy Policy
In short: this app plays entirely on your device. There is no account, no login, and no game server — we operate no backend and never receive your moves, your games, or any identifying information. The only data that leaves your device goes directly to Google or Microsoft for advertising and for processing an optional purchase, as described below.
This policy explains what information the English Checkers – AI & Analysis app (“the App”) handles, how it is used, and your choices. The App is published by MMC Solo Dev for Android (Google Play) and Windows (Microsoft Store).
Information Stored on Your Device
All of the following is kept in the App's own local storage on your device. It is not transmitted to us, and we have no way to read it:
- Guest ID: on first launch the App generates a random identifier entirely on your device. It is not linked to any real-world identity and is never sent anywhere. It exists only so your local profile, credits, and unlocks stay associated with this installation.
- Username: you choose a display name once during onboarding. It is stored only on your device and is shown only to you.
- Match history: when a game finishes, its moves and result are saved locally so you can review, replay, or analyze it from the History screen. This never leaves your device. You can erase it with “Clear all history” in the History screen.
- Preferences and counters: board theme, engine difficulty, Best Move search depth, eval bar on/off, hint credits, ad counters, and premium-unlock status.
- Device identifier: the App reads a platform device identifier and uses it strictly on-device — to encrypt your locally stored data and to detect a data folder copied from another device. It is not transmitted to us and is not used for advertising or tracking.
- Exported game files: “Export Game” and “Load Saved Game” read and write files at a location you pick yourself through your device's own file picker. Those files stay where you put them and are never transmitted anywhere unless you share them.
Gameplay and Analysis Are Fully Offline
The AI opponent, the Best Move analysis, the endgame tablebases, and the evaluation bar all run inside the App on your own device's processor. Your moves and board positions are never uploaded, because there is no server to upload them to. The App works with networking completely disabled, apart from showing ads and completing a purchase.
Advertising
To support free play, the App may display ads served by Google AdMob (and Google AdSense in the browser build). When ads are shown, Google may collect and process data — such as advertising identifiers and device and ad interaction information — under its own privacy policy, to serve and measure ads. We do not receive that data.
You can review Google's practices at policies.google.com/privacy and control ad personalization in your device settings. Buying the Premium upgrade removes ads entirely.
In-App Purchases
The App offers an optional one-time Premium upgrade (removes ads and grants unlimited analysis credits). Payment is handled entirely by the platform store — Google Play Billing on Android, the Microsoft Store on Windows. We never see or store your payment details.
Your purchase is validated on your device by the platform's own billing library; no purchase data is sent to any server of ours. Your entitlement is held by your Google or Microsoft account, so it restores when you reinstall or move to a new device.
What the App Does Not Collect
The App does not collect and does not request permission for your name, email address, contacts, precise location, camera, or microphone. It has no analytics or crash-reporting SDK, and no multiplayer or social features.
Children's Privacy
The App is not directed at children under 13 and does not knowingly collect personal information from children.
Data Sharing
We do not sell your information, and we hold no personal data to share. Data is exchanged only with the third parties named above — Google (advertising and Play Billing) and Microsoft (Microsoft Store billing) — and where required by law.
Data Retention
- On our servers
- Nothing. We run no server and store no user data.
- On your device
- Your guest ID, username, match history, preferences, credits, and premium status persist in local storage until you clear them or uninstall the App. Exported game files persist until you delete them yourself.
Your Choices
- Clear your match history at any time with “Clear all history” in the History screen; this leaves your guest ID and username untouched.
- Manage ad personalization in your device's advertising settings, or remove ads by purchasing the Premium upgrade.
- Uninstalling the App removes everything it stored locally — guest ID, username, match history, preferences, credits, and unlocks. Game files you exported elsewhere are not affected.
Changes to This Policy
We may update this policy from time to time. Any change will be published on this page with a new effective date at the top.
Contact Us
Questions about this policy? Contact marjoncajocon08@gmail.com.