Chess Performance Report from Your Games
See how you really play. This free chess performance report and advanced stats tool analyzes every game you played in a time window with Stockfish and turns them into clear statistics — accuracy, win rate, your best and worst openings, and where your rating is trending — broken down separately per time control.
Just enter your chess.com or lichess.org username and pick a period: 7, 14, 30 or 90 days, or all time. Every game is fetched and analyzed locally in your browser, so there is no signup, nothing to upload and no daily limits.
Unlike a single game review, the report zooms out to your recent form. These advanced statistics aggregate dozens of games so you can spot patterns you would never see one game at a time — the openings that quietly lose you rating, the time control where you play best, and whether your accuracy is climbing or slipping.
What the report shows you
Accuracy over time
Track your move accuracy across every game in the window and see whether your play is improving, so you know if your training is actually working.
Analyzed per time control
Bullet, blitz, rapid and daily are analyzed separately, because your strengths and mistakes are different at each speed.
Openings that win and lose
See which openings score well for you and which quietly cost you rating, for both White and Black, so you know what to keep and what to fix.
Win rate and results
Your wins, draws and losses across the period sit right next to your accuracy, so the numbers connect to the results that actually matter.
chess.com & lichess games
Enter your chess.com or lichess.org username and every game in the window loads automatically — no PGN files and no account to connect.
Private and free
Every game is analyzed locally in your browser with Stockfish. Nothing is uploaded, there is no cost and there are no daily limits.
How to run your performance report
Enter your username
Type your chess.com or lichess.org username so the report can fetch the games you actually played.
Choose time control and period
Pick bullet, blitz, rapid or daily, and a window from 7 days up to all time — each speed is analyzed on its own.
Let Stockfish analyze
Every game in the window is evaluated move by move on your own device, so the accuracy and stats are engine-based, not guesses.
Read your trends
Review your accuracy, win rate and opening breakdown to see exactly where to focus your next training session.
Frequently asked questions
What is a chess performance report?
It is an advanced statistics overview of how you have been playing lately: your accuracy, win rate, best and worst openings and rating trend across all your recent games, analyzed by Stockfish and grouped by time control.
How do I load my games?
Enter your chess.com or lichess.org username and choose a period. Every game in that window loads automatically — there is nothing to upload and no account to connect.
Is the report free?
Yes, completely. Every game is analyzed locally in your browser with Stockfish, so there is no signup, no cost and no daily limits, however many games you include.
Why is it analyzed per time control?
Your play at bullet, blitz, rapid and daily can be very different, so mixing them would hide real patterns. The report analyzes each speed on its own for accurate stats.
How long does the report take?
It depends on how many games are in the window, because every move is analyzed with Stockfish on your device. A larger period or 'all time' takes longer, so a laptop or desktop is recommended for big reports.
Are my games uploaded to a server?
No. Your games are fetched from chess.com or lichess and analyzed entirely in your browser, so nothing is stored on our servers.