Chess Stockfish Assistant

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About this app

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♟ Chess Stockfish Assistant — Your Personal Chess Study & Analysis Tool
Improve your chess with real-time board analysis powered by Stockfish 18, the world's strongest open-source chess engine. Study positions, learn from your moves, and understand the game like never before — all running 100% offline on your device.
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🔍 REAL-TIME CHESS ANALYSIS
Analyze any chess position instantly. Stockfish evaluates the board and suggests the best move, helping you study openings, middlegames, and endgames with precision.
➤ Visual arrows overlay showing the best move directly on the board
➤ Adjustable engine depth (1–20) for fast or deep analysis
➤ Centipawn evaluation and mate detection on screen
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📊 MOVE CLASSIFICATION — LEARN FROM EVERY MOVE
Each move is classified in real time so you can learn from every decision:
★ Brilliant ★ Great ★ Best ★ Excellent ★ Good ★ Inaccuracy ★ Mistake ★ Blunder
Understand why a move is strong or weak. Improve your chess by studying your own play and identifying patterns in your mistakes.
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🎯 MULTIPLE STUDY STYLES
Explore different approaches to chess and broaden your understanding:

Default — Pure Stockfish best move
Aggressive — Active queen play, king hunting, open lines
Defensive — Solid structure, castling priority, king safety
Trader — Piece exchanges from move one
Human — Natural play with small imperfections
Crazy — Bold sacrifices, gambits, and tactical chaos

Each style teaches you a different aspect of chess strategy and helps you develop a well-rounded game.
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📱 PLATFORM SUPPORT

Chess.com — Full support
Lichess — Beta support
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🔒 100% PRIVATE & OFFLINE

Your chess analysis stays on your device. No data is sent to any server. No account required. No tracking. Stockfish runs entirely on your phone — fast, private, and secure.
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⚙️ ACCESSIBILITY SERVICE USAGE
Chess Stockfish Assistant uses Android AccessibilityService to read chess board piece positions and move-list text from supported chess apps such as Chess.com and Lichess. This allows the app to reconstruct the current board, run on-device Stockfish analysis, and show move suggestions. The app does not use AccessibilityService to read passwords, personal messages, or text outside supported chess apps. Data used for analysis is processed on the device and is not sold or shared.
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⭐ PREMIUM
Free: 150 analysis moves per day with Default style
Premium: Unlimited analysis + all 6 play styles
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Whether you're a beginner learning chess fundamentals or an experienced player studying complex positions, Chess Stockfish Assistant helps you analyze, learn, and improve your game.
Download now and take your chess to the next level.

What’s new

Premium purchase flow fixes, billing improvements, and stability refinements.