Pixel Go Chess

Privacy policy

Effective 2026-10-06 · Home

Short version

Pixel Go Chess works without an account: your games, coins, ratings and settings stay on your device. You can optionally connect an Apple or Google account to back up and sync your progress through our server (section 5). The app shows ads through Google AdMob and sells optional purchases through RevenueCat, the App Store and Google Play. Those services receive some data, described below. This website sets no cookies, runs no analytics and loads nothing from other companies.

1. Data kept only on your device

Game records, puzzle progress, coins, AI rating, quests, check-ins, settings and a random device identifier created by the app. This data is not sent to us unless you connect an account (section 5). You can erase it any time in Settings → More → Delete all data, or by uninstalling the app.

2. Advertising (Google AdMob)

The free version shows a banner, short breaks between games and optional reward videos. Google's Mobile Ads SDK may collect your IP address (used to estimate a general location), your device's advertising identifier (the Android advertising ID, or on iOS the IDFA only if you allow tracking), interactions with ads, and diagnostic data such as app launch time and crashes. Google uses this data to show, measure and protect ads. See how Google uses data from partner apps.

3. Your consent choices (UMP and ATT)

In the European Economic Area, the UK, Switzerland and US states with privacy laws, the app asks for your choice through Google's User Messaging Platform before loading ads. On iPhone and iPad, iOS asks whether the app may track you (App Tracking Transparency). If you say no, ads are not personalized and every feature still works. You can change your ad choices any time in Settings → Purchases → Privacy options, and the tracking permission in iOS Settings → Privacy & Security → Tracking. On Android you can reset or delete your advertising ID in the system settings.

4. Purchases (RevenueCat, App Store, Google Play)

“Remove Ads”, coin packs and analysis packs are processed by Apple or Google. RevenueCat receives the purchase receipt and an app user ID (anonymous until you connect an account, then your account ID) so the app and our server can confirm, credit and restore your purchases. We never see your payment details. See RevenueCat's privacy policy.

5. Optional account and cloud sync

Connecting an account is optional and every feature works without one. If you tap Continue with Apple or Continue with Google in Profile → Account, the app sends the sign-in token issued by Apple or Google to our server once, to create or find your account. From then on the app syncs your progress each time you open it, so you keep it when you change phones or reinstall.

What the server stores: a random account ID; the user identifier Apple or Google assigns to you for our app and, only if you allow it during sign-in, your email address; your finished games (move records), coins, rating, quests, check-ins, lessons and puzzles completed, unlocked avatars, symbols and trophies, your profile name, avatar and shelf choices; a random device ID for each connected phone; and the purchase identifiers that RevenueCat reports so purchases can be credited to the account. We do not store passwords (sign-in happens with Apple or Google), contacts, location or photos.

Where and how: on Cloudflare Workers and Cloudflare D1, encrypted in transit (HTTPS) and at rest. Our server checks each game and reward it receives to prevent cheating; rejected entries are kept in a short technical log with your account ID.

How long: as long as the account exists. Disconnect (Profile → Account → Disconnect) removes the data from that phone and keeps the account. Delete account (Profile → Account → Delete account) removes everything from the server immediately and signs out every phone; see how to delete your account. Up to 5 phones can be connected to one account.

Sharing: we do not share account data with anyone. Apple, Google, RevenueCat and Cloudflare process it on our behalf for the purposes above.

6. Children

Pixel Go Chess is designed for teens and adults and is not directed to children under 13. We do not knowingly collect personal information from children. If you believe a child has used the app and data was collected by our partners, contact us and we will help with the request.

7. What we do not do

No required account, no chat, no location permission, no access to contacts, photos, microphone or camera. Signing in is optional and goes through Apple or Google, so we never see a password. We do not sell personal data.

8. This website

9. Your rights and contact

Depending on where you live you may have the right to access, correct or delete personal data and to object to its use. Without an account we hold no data about you, so requests are handled by deleting app data on your device or through Google and RevenueCat. With an account, you can delete everything yourself in the app, or email us the account email or sign-in method you used and we will delete it within 7 days. For anything else, write to congthongtin.khxh@gmail.com. We will update this page if the app or the website changes and show the new effective date.