Frequently asked
FAQ
How does Chessight analyze my games?
Chessight runs a full Stockfish 18 engine directly on your device. When you open a game, every position is evaluated, each move is classified, and accuracy percentages are calculated for both players. Nothing is sent to a server for analysis.
Where do I find my chess.com games?
Open the Profiles tab and add your chess.com username. Your recent games will appear automatically. Tap any game to analyze it. Chess.com's public API is used, so you do not need to give us a password or log in.
What's the difference between free and Premium?
Free: One full game analysis per day, resetting at midnight in your local time. You can also watch a rewarded ad to unlock additional analyses.
Premium: A one-time purchase that removes the daily limit and hides all ads. Premium is Family Shareable on iOS and tied to your Google account on Android.
How do I restore a purchase?
Go to Settings → Restore Purchases. On iOS, if your Apple ID owns Chessight Premium (or a family member in your Family Sharing group does), it will be reactivated at no additional charge. On Android, signing in with the same Google account that originally bought Premium restores it automatically.
Can I get a refund?
Refunds for in-app purchases are handled by Apple or Google, not by us.
- iOS: Visit reportaproblem.apple.com, sign in with your Apple ID, and request a refund for the Chessight purchase.
- Android: Visit play.google.com/store/account, find Chessight in your order history, and request a refund within 48 hours of purchase. After 48 hours, contact us at help@chessight.app.
Why do you show ads?
Rewarded ads give free users a way to unlock more analyses. You can remove all ads permanently with a one-time Premium purchase.
Do you track me?
Only if you grant permission — through iOS App Tracking Transparency or your Android Ads settings. If you decline, you can still use the app and see non-personalized ads. Full details are in our Privacy Policy.
Why won't my game analyze?
A few common reasons:
- Invalid PGN or incomplete game text
- Daily quota already used for free analysis
- Unusual starting positions or imported variations
If the problem persists, please report it and include the PGN if possible.
Why is the eval bar flashing or stuck?
When you play a variation move, the eval bar briefly dims while Stockfish recalculates the new position. If it remains dimmed for more than a few seconds, force-quit and relaunch the app.
Does Chessight work offline?
Yes. Game analysis, the bot game, the board editor, learning tools, and saved games work offline. Chess.com imports and rewarded ads require an internet connection.
Is my data private?
Your games and analysis are stored locally on your device. We use limited analytics, diagnostics, advertising, and purchase entitlement data as described in the Privacy Policy.
Troubleshooting
Quick fixes
The app crashes on launch
Force-quit Chessight and relaunch it. If it still crashes, restart your device. If the issue persists, please send us a bug report.
A purchase failed or didn't unlock
- Check your internet connection.
- Go to Settings → Restore Purchases.
- Confirm the purchase appears in your Apple ID history at reportaproblem.apple.com, or in your Google Play order history.
- If it still does not restore, email us at help@chessight.app.
Rewarded ads won't load
Ads require an internet connection and are not always available. If no ad appears after tapping Watch Ad, try again later. If the problem continues for a full day, contact us.
My chess.com games don't appear
Check that you entered the exact username used on chess.com. Usernames are case-insensitive. Newly finished games can take a few minutes to appear through Chess.com's API.
Contact
Still stuck? We'll help.
Chessight is an indie project built to bring strong chess analysis to your phone without requiring a paid chess.com subscription. It runs Stockfish 18 with NNUE evaluation directly on your device, so analysis works offline and stays private.
Because it bundles Stockfish, it is distributed under the GPL v3 license.