CHESS/BLOCK Privacy Policy
Effective September 17, 2026
Overview
CHESS/BLOCK is operated by Ankur Gupta LLC (“we,” “us,” or “our”). The app helps you pause selected apps and earn access time through chess practice. This policy explains what the app processes, why, and the choices available to you.
Screen Time and app selections
CHESS/BLOCK uses Apple’s Family Controls, Managed Settings, and Device Activity frameworks after you grant Screen Time permission. Apple supplies opaque selection tokens for apps and categories you choose. Those tokens, your blocking schedule, earned-time balance, puzzle progress, and related settings are stored on your device and in a private App Group shared only with CHESS/BLOCK’s Screen Time extensions. We do not receive the names of your selected apps from Apple and do not send these tokens or your Screen Time activity to our servers.
Chess information you provide
The app stores your approximate rating, training focus, onboarding answers, puzzle history, and lesson progress on your device to personalize practice and avoid repeating puzzles. You can reset this information in the app.
Optional chess services
You can use CHESS/BLOCK without connecting a chess account. If you connect Lichess, the app uses Lichess OAuth to request the minimum access needed for the displayed feature, stores the access token in Apple Keychain, reads eligible rating information, and may send eligible puzzle results when you choose that integration. You can disconnect and revoke access from Settings. If you enter a Chess.com username to import a public rating, the app sends that username to Chess.com’s public API. Lichess and Chess.com process information under their own privacy policies.
Purchases
Subscriptions are processed by Apple through StoreKit. We receive purchase and entitlement status, but not your full payment-card details. Apple handles billing under its own terms and privacy policy.
Analytics
The production release described by this policy does not enable third-party product analytics. The app does not use advertising trackers, cross-app tracking, session replay, or targeted advertising. If this changes, we will update this policy and the App Store privacy disclosures before enabling the feature.
Notifications
If you allow notifications, the app schedules local reminders about earned time. Notification permission can be changed in iPhone Settings.
Support and technical records
If you email support, we receive your email address and the information you include. Apple and our website hosting providers may process limited technical logs needed to deliver their services, prevent abuse, and diagnose errors. We use support correspondence only to respond and operate the service.
Sharing, sale, and retention
We do not sell personal information. We share information only with the service providers described above when you use those features, with vendors needed to operate support or the website, or when required by law. On-device app data remains until you reset the app, remove it, or delete it through applicable system controls. Support correspondence is retained only as reasonably needed for support, security, legal, or dispute purposes.
Your choices and requests
You can revoke Screen Time or notification permission in iPhone Settings, change blocked apps inside CHESS/BLOCK, disconnect Lichess, reset onboarding and progress, or delete the app. Depending on where you live, you may also request access, correction, or deletion of information we control by emailing support@ankgupta.com. We may need to verify a request.
Children
CHESS/BLOCK is a general-audience app and is not designed to collect a child’s name, contact details, or precise location. A parent or guardian should supervise a minor’s use of subscriptions and optional third-party chess accounts.
International processing and changes
Ankur Gupta LLC is based in the United States. Support and service providers may process information in the United States or other countries where they operate. We may update this policy as the product or legal requirements change; the effective date identifies the current version.
Contact
Privacy questions and requests: support@ankgupta.com.