Have a question, found a bug, or want to suggest a feature? We read every message.
Email: mitsi@uptrail.ai
How do I cancel my subscription? iOS Settings → Apple ID → Subscriptions → Chessbook → Cancel.
How do I restore a previous purchase? Settings tab in-app → Restore purchases.
How do I delete my data? Settings tab in-app → Delete all data. This is irreversible.
App is crashing on launch. Force-quit, then reopen. Still crashing? Email us your iPhone model and iOS version.
Chessbook is local-first. Your data lives on your device. See our Privacy Policy for what we collect and what we never do.