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Comparison · Updated October 10, 2026
Chessigma Alternative: Free Review vs AI Coaching
Chessigma is a free, in-browser game reviewer: load a Chess.com, Lichess or PGN game and get Stockfish move grades. ChessMogg is a paid AI coach that looks across all your games for the mistakes you repeat.
Disclosure: ChessMogg publishes this page. Competitor details come from each product’s official website, checked October 10, 2026. Features and prices change, so confirm on their sites. If anything here is out of date, email [email protected] and we’ll fix it.
| Product | Platforms | Your games from | Core approach | Pricing |
|---|---|---|---|---|
| ChessMogg | iPhone app + web | Chess.com & Lichess (username) | Finds patterns across hundreds of your games; personal lessons with Chad; engine-checked positions; text and voice chat | Subscription; free download |
| Chessigma | Web | Chess.com, Lichess, PGN | Free in-browser Stockfish review with move grades and accuracy, one game at a time | Free |
The main difference
Use Chessigma for free, quick single-game reviews with move grades.
Use ChessMogg when single-game reviews stop helping: it finds patterns across hundreds of games, explains them in plain language, and builds lessons from your positions.
They work well together: free review after each game, and a coach to tell you what to actually train.
Frequently asked questions
Is Chessigma free?
Chessigma describes itself as a free game review tool for Chess.com, Lichess and PGN games.
What does ChessMogg add over a free game review?
Pattern finding across hundreds of games, plain-language coaching from Chad, and lessons built from your own positions.