Support
Sync and storage
How do my books sync between devices?
Through iCloud Drive. Sign in to the same Apple Account on each device and turn on iCloud Drive (iOS Settings › your name › iCloud › iCloud Drive), and keep Settings › Storage › iCloud sync on in Chessby. Your books also appear in the Files app under iCloud Drive › Chessby.
My books don’t show up on another device.
- Check that both devices use the same Apple Account and that iCloud Drive is on for Chessby.
- Large books can take a while to upload or download, especially on a slow connection or in Low Power Mode. Leave the app open on Wi-Fi.
- Check free iCloud storage in iOS Settings.
Can I keep books only on this device?
Yes: turn off Settings › Storage › iCloud sync. Books already in iCloud Drive stay there.
Purchases
How do I restore Chessby Pro?
Open the Chessby Pro screen (Settings in the app) and tap Restore, signed in with the Apple Account you subscribed with.
I bought the old ChessBook app. Do I get Pro?
Yes. Chessby recognises the earlier purchase on your Apple Account and turns on Pro automatically. If it doesn’t, make sure you’re signed in to the App Store with the account that bought ChessBook, then tap Restore Purchases. Still nothing? Email us.
How do I cancel?
iOS Settings › your name › Subscriptions › Chessby. Pro stays on until the end of the period you paid for. See the Terms.
Lichess and Chess.com
Is my Lichess password safe?
Chessby never sees it. You sign in on lichess.org, and the app keeps only a sign-in token in the iOS Keychain. Disconnect in Settings › Lichess.
Why does the Explore panel need a Lichess account?
The Lichess opening explorer only answers signed-in users.
Chess.com
Only a username is needed: Chess.com publishes games by username. Nothing is posted to your account.
Privacy
No tracking, no ads, no Chessby server. Details in the Privacy Policy.