Blunder - Chess Scanner
From photo to analysis board
Free · In‑App Purchases
Turn a chessboard photo into an interactive position. Explore engine lines, organize your games, and sync your library across iPhone and iPad.
Take a photo, open it in Blunder, and start exploring a chess position. Super fast!
Blunder turns photos and screenshots of chessboards into interactive positions, with quick access to the camera and your photo library.
FROM PHOTO TO POSITION
- Recognize boards in screenshots and photos, including photos taken at an angle.
- Automatically detect the board orientation.
- Infer whose turn it is from highlighted last-move squares when available, or change the side to move yourself.
EXPLORE THE BEST MOVES
- View Stockfish analysis powered by Lichess.
- Choose how many alternative lines to show.
- Tap moves in a line to explore the continuation.
- Choose an analysis time and available engine options.
- Switch between the Blunder analysis view and the Lichess view.
BUILD YOUR CHESS LIBRARY
- Revisit recent games in a visual board gallery.
- Save favorites and organize positions into folders.
- Sync your library with iCloud across iPhone and iPad.
- Turn off automatic history while keeping your favorites and organized games.
SHARE AND CONTINUE
Share positions as FEN, or open them in Lichess or Chess.com.
Blunder requires iOS 26 or later. Internet access is required for Lichess analysis. Recognition results can vary with image quality and board design.
BLUNDER PRO
Your first 20 scans are free. Blunder Pro unlocks unlimited scans with a monthly or yearly subscription, or a one-time lifetime purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period. Manage or cancel them in your App Store account settings.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://lucas.io/privacy
Ratings & Reviews
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Bug fixes
The developer, Lucas Raggers, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Lucas Raggers
- Size
- 22 MB
- Category
- Board
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Monthly $1.99
- Lifetime $9.99
- Yearly $6.99
- Copyright
- © Lucas Raggers