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The best free chess game review tools in 2026
Five genuinely free ways to get your games analyzed — including our own, ranked honestly next to the competition. The right one depends on what you're reviewing for.
There's no single best free review tool. There's a best tool for volume, a best tool for a polished daily report, a best tool for unlimited Chess.com-style grades. This list includes ChessGrader — we make it — so every entry gets the same treatment: what it does, a "best for" line, and an honest limitation. Including ours.
1. Lichess — the default answer
If someone asks "where do I analyze games for free," the answer is Lichess until proven otherwise. Server-side Stockfish analysis at roughly 2 million nodes per move, unlimited, on any game — yours, imported PGN, anyone's. You get an eval graph, accuracy, average centipawn loss, and every Inaccuracy, Mistake, and Blunder flagged. Around it sits the best free study ecosystem in chess: an opening explorer over billions of games, a masters database, and Studies for building shareable annotated analysis. The whole site is open source and donation-funded, so none of this is a funnel to a paid tier.
Best for: volume analysis and serious study. The catch: the report is spartan. No Brilliant, Great, or Miss labels, no estimated game rating, no coach. Lichess tells you where you went wrong and leaves the encouragement to you.
2. ChessGrader — unlimited Chess.com-style grading
ChessGrader is our answer to the gap between the two big sites: Chess.com's report style at Lichess's price. Every move graded with the full vocabulary — Brilliant through Blunder, including Great and Miss — plus accuracy, an estimated game rating, an eval graph, and mistake drills. Unlimited, no signup. Stockfish 17.1 runs as WebAssembly in your browser at a fixed 100,000 nodes per move, with critical moments re-verified at 600,000 nodes, so your games never touch a server. Import from Chess.com or Lichess by username, or paste any PGN. Unusually for this category, every formula is published on the methodology page — if you think a grade is wrong, you can check the math.
Best for: unlimited Game Review-style reports with published methodology. The catch: analysis speed depends on your device (about a minute per game on a modern phone), it's standard chess only — no variants — and there's no opening explorer or server database.
3. Chess.com free tier — the best coach experience
Chess.com's Game Review is the most polished post-game report in chess, and the free tier includes one per day. You get the famous move labels, an accuracy score, an estimated game rating, and a coach persona walking you through the key moments. If you play on Chess.com, it's one click after every game, and for a single daily game it's hard to beat the experience.
Best for: the friendliest single review of today's game. The catch: one review per day, full coach commentary and blunder details in self-analysis need a paid membership, and the grading formulas are proprietary — you can't verify how a label was decided.
4. ChessIgma — free analysis with AI coach features
ChessIgma offers free, unlimited game analysis powered by Stockfish 17, with no signup needed to analyze. It imports games by Chess.com or Lichess username or from a pasted PGN, and produces move classifications from Brilliant to Blunder, accuracy scores, and eval graphs. Its distinguishing bet is the coaching layer: an AI "Supercoach" that reads across your games to build a training plan, plus puzzle cycles and an opening trainer. It's the most feature-dense of the independent tools.
Best for: unlimited analysis plus AI coaching in one place. The catch: the grading methodology isn't published, some features sit behind an account or premium tier, and analysis runs on their servers rather than your device.
5. WintrChess — the open-source game report
WintrChess grew out of WintrCat's popular "Game Report" project and does one thing: free game reports with move classifications, no signup. Paste a PGN or pick a game from your Chess.com or Lichess account and it flags everything from brilliancies to blunders. The whole project is open source under GPL-3.0, which puts it in rare company with Lichess on the transparency front.
Best for: a quick, no-frills free report from an open-source project. The catch: it's a volunteer-maintained project — at the time of writing the repository is openly seeking maintainers — and it's a single-purpose report tool without drills, databases, or study features.
Side by side
| Lichess | ChessGrader | Chess.com (free) | ChessIgma | WintrChess | |
|---|---|---|---|---|---|
| Unlimited reviews | Yes | Yes | No (1/day) | Yes | Yes |
| Signup required | For your own games | No | Yes | No (for analysis) | No |
| Move labels | Inaccuracy/Mistake/Blunder | Brilliant → Blunder | Brilliant → Blunder | Brilliant → Blunder | Brilliant → Blunder |
| Accuracy score | Yes | Yes | Yes | Yes | Yes |
| Estimated game rating | No | Yes | Yes | Yes (estimator) | Yes |
| PGN import | Yes | Yes | Own games | Yes | Yes |
| Methodology public | Yes | Yes, fully | No | No | Open source |
| Engine runs | Their servers | Your browser | Their servers | Their servers | Mixed |
One number that never transfers between tools: accuracy. Each site uses its own formula, so an 85% here isn't an 85% there. Compare only within one tool.
How to actually choose
- You analyze many games and study openings: Lichess. Nothing else combines unlimited deep analysis with a real database.
- You want Chess.com-style graded reports for every game you play: ChessGrader. Unlimited, no signup, formulas published, games never uploaded.
- You play one serious game a day on Chess.com: the free daily Game Review is genuinely good. Use it, then use a free tool for the rest.
- You want an AI training plan built from your games: ChessIgma is the one betting on that.
- You want a quick open-source report with zero commitment: WintrChess.
- You have OTB games in a notebook: anything with PGN paste works; ChessGrader's PGN analyzer grades them without an upload.
Frequently asked questions
Do I need to pay for chess game review at all?
No. Lichess offers unlimited free server analysis, and tools like ChessGrader, ChessIgma, and WintrChess offer free unlimited reports with Chess.com-style move labels. Paying for Chess.com mainly buys convenience and its coach experience on the site where you already play.
What's the best free alternative to Chess.com's Game Review?
For the closest match to the Game Review format — Brilliant-to-Blunder labels, accuracy, and an estimated game rating — ChessGrader, ChessIgma, and WintrChess all do it free and unlimited. ChessGrader additionally publishes its full grading methodology and runs analysis in your browser, so games are never uploaded. For raw analysis depth without the labels, Lichess is the standard answer.
Are free chess analysis tools as accurate as paid ones?
The engine quality is essentially identical, since nearly every tool free or paid runs Stockfish. Differences come from search depth and from the formulas that turn evaluations into labels and accuracy scores. A free tool with a deep search, like Lichess at roughly 2 million nodes per move, analyzes more deeply than many paid reviews.
Can I use these tools for over-the-board games?
Yes, if the tool accepts PGN input. Transcribe your OTB game into PGN, then paste it into Lichess, ChessGrader, ChessIgma, or WintrChess. ChessGrader analyzes pasted PGNs entirely in your browser, which also means an unpublished tournament game never leaves your device.
Why do the same game and moves get different accuracy scores on different sites?
Each site uses its own accuracy formula and search settings. Lichess and ChessGrader publish their formulas; Chess.com and most others do not. The scores usually land within a few points of each other, but they are only comparable within a single tool.
Is it safe to type my username into these tools?
Generally yes. Tools that import by username read the public game archives that Chess.com and Lichess expose for every account. There is no login or password involved, so the tool cannot access or change anything on your account.