Chessdoku

Questions, bug reports, or feedback? Email support@chess-doku.com and I’ll get back to you.

When reporting a problem, it helps to include your device model, iOS version, and which level or screen you were on.

Chessdoku is free to play: the daily challenge, the tutorial, and a generous run of free levels — including the first 100 in Classic — are always free. A single optional in-app purchase, Unlock Everything, opens all 1,500 levels and every Quick Play preset — one time, no subscription.

Bought it already on another device? Open Settings → Unlock Everything (or the Unlock screen) and tap Restore purchases.

Chessdoku collects no data. There is no account, no sign-in, and no analytics or advertising.

• All progress — levels, stats, streaks, settings, and your purchase status — is stored only on your device.
• Nothing you do in the app is transmitted to us or to any third party. The puzzles are generated on your device.
• Purchases are processed entirely by Apple’s App Store (or Google Play on Android). We never see your payment details; we receive no personal information from the transaction.
• Because we store nothing off-device, there is nothing for us to share, sell, or delete on request. Removing the app removes all of its data.

If this policy ever changes, the updated version will be posted on this page.