Comparison
The best chess analysis tools
Nearly every serious analysis tool runs Stockfish under the hood, so the real question is not “which engine is strongest?” but “what does the tool do with the evaluations?” Here are the ones worth using in 2026, grouped by the job they do best - and honest about where each falls short.
| Audit Chess | Chess.com | Lichess | Stockfish | |
|---|---|---|---|---|
| Primary scope | Your whole game history | One game (Game Review) | One game / position | One position |
| Cost | Free | Free tier + paid | Free | Free (open source) |
| Account needed | No | Yes | Optional | No |
| Where it runs | Your browser | Site + apps | Site + apps | Local / embedded |
| Reads your games by username | Yes — Chess.com + Lichess | Own site only | Own site only | No |
| Openings ranked by your results | Yes | No | Explorer (all players) | No |
| Puzzles from your own games | Yes (FIX / PUNISH) | Curated puzzles | Curated puzzles | No |
| Opponent scouting | Yes | No | Explorer only | No |
| Best for | Patterns across your games | Guided single-game review | Free single-game analysis | Raw engine strength |
Attributes as of 2026. Chess.com and Lichess also offer far more than analysis (play, lessons, tournaments); this table only compares the game-analysis angle.
Stockfish
stockfishchess.org →Best for: The strongest open-source engine and the foundation under almost every tool here. Free, unlimited depth, fully in your control if you run it locally.
Watch out: A pure evaluation engine - it finds the best move but does nothing to organise your games, explain patterns, or tell you what to study.
Lichess analysis
lichess.org →Best for: Free, fast, no account needed. Per-game computer analysis, an opening explorer, and study tools that are hard to beat for going deep on one position.
Watch out: Deliberately per-game - it will not summarise your whole history into openings-by-result or repeated-mistake reports.
Chess.com Game Review
chess.com →Best for: Polished, guided walkthroughs of a single game with an accuracy score and plain-language comments - great for learners who want narration.
Watch out: The full version is a paid feature, and like Lichess it reviews one game at a time rather than your whole history.
Audit Chess
Analyze your games →Best for: The best free tool for the whole-history view: openings ranked by your real results, the blunders you repeat, the wins you throw away, endgame and playstyle profiles, and puzzles built from your own mistakes. Reads Lichess and Chess.com by username, no account.
Watch out: It is a cross-history analyzer, not a single-game narrator - use it alongside a per-game tool when you want to dissect one game move by move.
Per-game power vs whole-history insight
The category splits cleanly in two. Per-game tools - Lichess, Chess.com, a local Stockfish - are built to answer “what was best in this position?” They are mature and excellent. Whole-history tools answer a different question: “across all my games, what should I actually work on?” That is where Audit Chess sits, and the two types are complementary rather than competing. For a deeper roundup of the whole-history analyzers specifically, see the best free chess game analyzers.
Related
This page is about analysis tools specifically. If you want the wider picture - play, tactics training, opening prep and databases - see the best free chess tools. If you specifically want to replace Chess.com’s analysis, see Chess.com analysis alternatives. For a deeper look at whole-history game analyzers, read the best free chess game analyzers, or compare specific products in vs Chess.com and vs Lichess.
What is Audit Chess?
Audit Chess is a chess analysis platform that reads your Chess.com or Lichess game history and identifies the recurring weaknesses, opening tendencies, blunders, blown wins, missed mates and endgame patterns that are hard to see from a single game. It runs Stockfish in your browser, needs no account, and never uploads your games.
What makes it different: most chess engines analyze one position or one game. Audit Chess focuses on the patterns across your whole history - and turns them into training, so your own blunders become Stockfish-verified puzzles and your weakest openings become concrete things to study.
Frequently asked questions
What is the best chess analysis tool?+
There is no single winner - it depends on the job. Stockfish is the strongest engine and underpins most other tools. Lichess and Chess.com give you polished per-game review. Audit Chess is the best free option for whole-history analysis: which openings cost you points, which mistakes you repeat, and puzzles from your own blunders. Most players get the most from combining a per-game tool with a whole-history one.
What is the best free chess analysis tool?+
For per-game depth, Lichess computer analysis is free and excellent. For whole-history analysis, Audit Chess is free, needs no account, and runs Stockfish in your browser. Both are genuinely free rather than free trials, which is rare in this category.
Do these tools use the same engine?+
Largely, yes. Stockfish is the engine behind Lichess analysis, Chess.com Game Review and Audit Chess. The difference between tools is not raw strength but what they do with the evaluations - a single-game walkthrough, an opening explorer, or a cross-history pattern report.
Which tool finds patterns across all my games?+
Audit Chess. It is built specifically for the whole-dataset view - ranking your openings by result, detecting repeated blunders and blown wins, profiling your endgames and style, and turning your mistakes into puzzles. Per-game tools do not aggregate across your history like this.
Audit Chess is free and not affiliated with Chess.com or Lichess.