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KnightVision is a chess companion app that helps you scan scoresheets, recognize board positions with your camera, analyze games with a chess engine, solve puzzles, and import games from Chess.com and Lichess. It's available on iOS and the web.

You can sign up with your email and password, or use Google Sign-In, Apple Sign-In, or a one-time password (OTP) sent to your email or phone number.

Go to your profile settings and enter your Chess.com or Lichess username. You can also enable auto-import to automatically pull in your recent games. This is done during onboarding or anytime from the settings page.

Take a photo of your handwritten chess scoresheet (or select one from your photo library), and our AI will read the moves and convert them into a digital game record (PGN). The image is processed in real time and is not stored permanently.

Point your camera at a physical chessboard and KnightVision will detect the pieces in real time using computer vision. You can save the detected position, add a title and notes, or start an engine analysis from there.

Accuracy depends on image quality, lighting, and handwriting clarity (for scoresheets). For best results, use good lighting and make sure the full scoresheet or board is visible in the frame. You can always correct any errors after scanning.

Game reviews analyze every move in your game using the Stockfish chess engine. Each move is classified (brilliant, great, good, inaccuracy, mistake, or blunder) and you get an accuracy score, opening name, and detailed move-by-move feedback.

KnightVision offers three tiers:

• Pawn (Free): 5 board scans/mo, 5 scoresheet scans/mo, 5 puzzles/day, 3 game reviews/mo
• Knight ($4.99/mo or $34.99/yr): 30 board scans/mo, 30 scoresheet scans/mo, 20 puzzles/day, 15 game reviews/mo
• King ($12.99/mo or $99.99/yr): Unlimited everything

On iOS: Go to your device's Settings > Apple ID > Subscriptions, find KnightVision, and tap Cancel Subscription.

On the web: Go to Settings in the app and manage your subscription through Stripe. Your access continues until the end of the current billing period.

Yes. You can upgrade or downgrade your plan at any time. On iOS, changes take effect at the next billing cycle. On the web, you can manage plan changes from the Settings page.

iOS purchases: Refunds are handled by Apple. Visit reportaproblem.apple.com to request a refund.

Web purchases: Contact us at the email above and we'll help you with your Stripe subscription.

Go to Settings in the app and select "Delete Account." This will permanently remove all your data, including your games, saved positions, profile, puzzle stats, scan history, preferences, and subscription records. This action cannot be undone.

Yes. You can export your games in standard PGN (Portable Game Notation) format, which is compatible with most chess software and platforms.

Yes. You can delete individual games from your game history and individual saved positions from the positions screen at any time.

We collect only what's needed to provide the service: your email, chess profiles, games, saved positions, and feature usage counts. We don't use any analytics SDKs, advertising trackers, or cross-app tracking. See our Privacy Policy for full details.

Make sure the scoresheet is well-lit, flat, and fully visible in the frame. Avoid shadows and try to keep the camera steady. If some moves are misread, you can manually edit them after scanning.

For best results, position the camera directly above the board with even lighting. Avoid glare on the pieces. The scanner works best with standard tournament-style pieces and boards.

Make sure you've entered your exact username (case-sensitive for Lichess). The import pulls your most recent games — if you have a new account with no games, there won't be anything to import. Also ensure you have an internet connection.

Check your spam or junk folder for email OTPs. For phone OTPs, make sure you entered the correct number with country code. If the issue persists, try signing in with a different method or contact us.