Privacy

Privacy Policy

Chessight is local-first by design. No account, no game upload — your moves stay on your device. Here's exactly what data is involved and why.

Last updated: April 24, 2026
Chessight uses limited data for app functionality, premium purchase entitlements, analytics, diagnostics, and advertising as described below. Your games, analyses, and saved profiles never leave your device.

Data Collection

  • The app does not require user accounts or login.
  • Chess.com usernames entered by the user are used solely to fetch publicly available game data from the Chess.com public API.
  • We do not receive your payment card or billing details. Apple processes purchases through StoreKit; Google processes purchases through Google Play Billing.
  • We and our service providers may process limited data needed to provide the app, measure usage, diagnose crashes, support rewarded ads, and verify premium entitlements.

Data Categories We Collect

  • Purchases: Product identifiers and transaction dates used to determine whether premium access is active.
  • Identifiers: Advertising identifier (IDFA on iOS, AAID on Android) if you grant tracking permission, and device identifiers used by our service providers.
  • Usage Data: Screen views, app events, and feature usage.
  • Diagnostics: Crash logs and performance data.
  • Device Information: Device model, OS version, and app version.

Payments

We offer an optional one-time premium purchase processed by Apple on iOS and by Google on Android. We never receive your payment method. Apple handles iOS transactions through StoreKit; Google handles Android transactions through Google Play Billing. We record only the information needed to determine whether your purchase entitlement is active, such as the product identifier and transaction date. Apple's and Google's privacy policies apply to the payment itself.

Advertising

We display rewarded video ads through Google AdMob for users who have not purchased premium. Google may collect data as an independent controller for ad delivery and measurement, including the advertising identifier (IDFA on iOS or AAID on Android) if you grant permission, IP address, coarse location, device type and operating system, and ad interaction data such as when an ad is shown, clicked, or completed.

If you decline tracking permission, ads may still appear but they will be non-personalized. Learn more at Google's advertising privacy policy.

Tracking Permission

On iOS, when you first launch the app, the system may ask whether to allow tracking. We use this permission only to enable personalized ads. You can change this choice at any time in iOS Settings → Privacy & Security → Tracking.

On Android, you can opt out of personalized ads in Android Settings → Privacy → Ads (or Google → Ads on some devices). Denying tracking does not disable any app functionality on either platform.

Third-Party Services

Data Storage

  • All data (saved profiles, cached analyses, engine settings) is stored locally on your device.
  • Analytics, diagnostics, advertising, and purchase entitlement data may be processed by the third-party services listed above.

Your Choices

  • You can choose whether to allow tracking in iOS Settings → Privacy & Security → Tracking, or opt out of personalized ads in Android Settings → Privacy → Ads.
  • You can manage Apple's ad preferences in iOS Settings → Privacy & Security → Apple Advertising and turn Personalized Ads on or off.
  • You can avoid rewarded ads entirely by purchasing premium.

Children

Chessight is not directed to children under 13. We do not knowingly collect personal data from children under 13. If you believe a child under 13 has provided personal data through the app, please contact us so we can review and address the issue.

Recent Changes

  • Extended payment, tracking and advertising sections to cover Android (Google Play Billing, AAID, Android settings) for the upcoming Play Store release.
  • Added information about optional premium purchases processed by Apple through StoreKit and by Google through Play Billing.
  • Added information about rewarded ads served through Google AdMob, including personalized and non-personalized ads.
  • Added details about App Tracking Transparency permission and how to change that setting in iOS, plus the Android equivalent.
  • Updated the list of third-party services and the categories of data processed by the app and its service providers.

Contact

If you have questions about this privacy policy, please contact us at help@chessight.app.