ChessJitsu Privacy Policy
Updated October 15, 2026
This policy applies to the ChessJitsu mobile app and ChessJitsu.net.
Information we collect
ChessJitsu does not require you to create an account. We do not sell personal information or use advertising or cross-app advertising tracking in the mobile app. Version 1.2.0 introduces optional in-app purchases and RevenueCat purchase management as described below; earlier app versions do not include this purchase integration.
Optional library purchases — app version 1.2.0
Free chess lessons and Chess Principles are included. An optional one-time purchase unlocks Sleep Meditation and Commute Training. Apple or Google handles payment; ChessJitsu does not collect payment-card details. The app uses RevenueCat to verify purchases and manage access. RevenueCat processes an app-generated customer identifier, store purchase history, entitlement status and technical information needed for billing, fraud prevention and purchase reporting. Purchase and restore checks use an internet connection. See RevenueCat's privacy policy.
Lesson completion and playback progress are stored locally on your device. If you previously paid for the original app, contact support rather than purchasing again. Recovery is handled manually.
App and website operation
The app provides access to ChessJitsu.net and includes three training videos stored on your device for offline playback. When the app or a browser opens ChessJitsu.net, standard technical information such as an IP address may be processed by the website hosting provider as necessary to deliver pages, prevent abuse, and maintain security.
Third-party content and links
Some website pages contain embedded media or links to services such as YouTube and social networks. Those services may receive standard connection information when their content is loaded or when you choose to visit them. Their own privacy policies govern their handling of information.
Support email
If you email us, we receive the email address, message, and any information you choose to include. We use it only to respond and provide support, and we do not sell it.
The purchase support option opens a draft with your current app customer ID for you to review and send. This identifier helps us grant recovered access to the correct installation. Nothing is emailed automatically. Never send passwords, verification codes or card details.
Data requests
Email tserenzurganov@gmail.com to request deletion of support information or RevenueCat customer records. Include your app support customer ID if available. Deleting access records can affect purchase recovery. Apple and Google control their own transaction records and retention requirements.
Children
We do not request children's names or contact details in the learning screens. Purchases should be handled by an adult using the store's purchase controls.
Changes
If our data practices change, we will update this policy and any applicable app-store privacy disclosures.
Contact
Questions about privacy may be sent to tserenzurganov@gmail.com.