FENLens
Chess position recognition FEN, PGN, photos, puzzles

Snap a board. Find the idea.

FENLens turns a chess position from a photo, screenshot, book, FEN, PGN, or manual board setup into a position you can inspect, correct, analyze, and play from.

⬇ Download for Android ♔ Coming soon on App Store

Designed for chess learners who solve tactics, review games, and want a faster way to move from a real board image to analysis.

A phone using FENLens to capture a chess position from a book

See the app in action

Real screenshots
FENLens home screen with camera, photo, FEN PGN import, and board editor options
Import
Recognized chess position with side to move and board view controls
Recognize
Analysis screen showing a best move arrow and Mate Finder
Analyze
Play screen with chessboard and engine level
Play
History screen with saved positions and game thumbnails
History
Settings screen with language, recognition, theme, piece style, and board style options
Customize

Built around the position, not a blank engine board

Photo to analysis
1

Import from the real world

Use camera, photo upload, shared screenshots, FEN, PGN, or the board editor. Correct the side to move and board view before saving.

2

Fix recognition quickly

The editor is built for small corrections: add, remove, flip, validate, and import without starting over.

3

Explore the next idea

Best Move draws the suggested move on the board. You can move pieces from the analysis page and continue exploring the line.

For tactics and puzzles

Mate Finder is designed for common chess puzzle workflows: check whether the current side has mate in one, two, or three.

For practice games

Start a game from a clean initial board or from the current analyzed position, then review the game with captured pieces, evaluation, and move navigation.

For local history

Imported positions and games are kept in local history so you can rename, revisit, copy FEN, and review later.

FENLens Pro

Optional subscription

Free

$0

Includes core import, board editing, local history, basic recognition, and everyday analysis tools.

Pro

$1.99/mo

$14.99/year. Adds enhanced recognition, 30 recognitions per day, higher-level engine play, and Mate Finder. Android Pro is free for early users until June 30.

Privacy-minded by design

Read the full policy

FENLens stores settings, history, positions, and games on your device. Server features are used for recognition, usage limits, subscriptions, and analysis requests. You can request server account deletion from the app settings.

Download

Android is available as a direct download. The iOS version is being prepared for App Store release.

⬇ Download for Android

♔ Coming soon on App Store

Support

Questions about recognition, purchases, account deletion, or app behavior?

Contact support

App Store links

Use these URLs in App Store Connect when preparing the listing.

Privacy Policy · Support URL