Privacy policy
Your game stays on your device
CloudChess is developed by Kosta Karathanasopoulos. Puzzle generation, chess analysis and adaptive coaching run on your device. Progress, scores, preferences, collected styles and coaching estimates are stored locally. CloudChess has no analytics of its own and does not send gameplay or coaching records to a CloudChess server.
Ads in free play
From version 2.0, free play shows rewarded ads through Google AdMob. Google’s ad SDK starts only after your first few free puzzles, and Premium subscribers are not shown ads. Google and its advertising partners then receive: device information (such as model, operating system and IP address), approximate location derived from your IP address, an app-specific identifier and, only if you allow tracking, your device’s advertising identifier, the ads you see and how you interact with them, and ad performance and crash diagnostics. They use this to show, measure and limit ads and to prevent fraud, under Google’s privacy policy. In the EEA, the UK and Switzerland you are asked for consent first and can change it later in Settings; you can also decline tracking in the iOS prompt or in Settings → Privacy & Security → Tracking. Declining never blocks free play. CloudChess does not send your games or scores to advertisers.
Optional subscriptions
CloudChess offers optional monthly and yearly Premium subscriptions through Apple In-App Purchase, with a free trial for eligible new subscribers. Apple handles payments, trials and billing; CloudChess never receives your card details. The app verifies subscription transactions on your device and keeps a local record of free puzzles and ad breaks in the iOS Keychain. This record may survive deleting and reinstalling the app. It is not sent to a CloudChess server. Restore purchases and Manage subscription are available in Settings. Deleting the app does not cancel your subscription; cancel it through your Apple Account.
Storage and removal
Game records remain until removed with the app. Use Delete App in iOS Settings to remove these game records; Offload App retains them. The free-puzzle record in Keychain may remain after deletion. Device backups may contain app data according to your Apple backup settings; manage those backups in your device settings.
Support and external pages
When you email support, we receive the address and information you choose to send and use them to respond to your request. Do not include passwords. You can request deletion of support correspondence by emailing the same address. Opening an external link contacts its website. Our public policy and support pages are hosted by GitHub Pages; GitHub may process standard request information under its privacy statement. The pages do not contain our own analytics or tracking cookies.
Questions and updates
Contact kostakarathanasopoulos@proton.me with privacy questions. Changes to these practices will be reflected in this policy and its updated date.