Find the mistakes you keep making. Then fix them.
Chess Mirror reads your own games from chess.com, Lichess or any PGN file, finds the mistakes that cost you most, and turns them into puzzles to practise. It all runs on your own device, so your games stay yours.
No account needed. Works on phones and computers, and offline once installed.
See where you really lose points
Not generic advice. What happens in your games, move by move.
Your blunders, named
Missed forks, pins and mates, pieces left hanging, back-rank trouble. See which kind of mistake costs you most, and how it changes over time.
Puzzles from your own games
Positions where you went wrong become puzzles. Miss one and it comes back later, so the lesson sticks.
Openings, time and trends
Which openings work for you, when you run low on time, and a weekly plan that tells you what to practise next.
In your language
English, Arabic, French, Spanish, German, Portuguese and Russian, including the emails and reminders you choose to get.
Gentle reminders
Optional. A short nudge by email or on your phone at the hour you pick, only on days you have not practised.
Prices shown before you pay
Free to start. Pro is $6 a month or $48 a year, with tax for your country shown at checkout.
How it works
Three steps, about ten minutes the first time.
Load your games
Type your chess.com or Lichess username, or open a PGN file from any site.
Let it analyse
The Stockfish engine checks every move on your own device. Choose fast or deep.
Practise your mistakes
Work through the puzzles, follow your plan, and watch your accuracy and blunders improve.
Made for your phone too
Solve puzzles on the bus. Install it on your home screen like any app, and it keeps working with no connection.
Your games stay on your device
That is how it is built, not a promise on a page.
- The analysis runs in your own browser. Your games are not sent to us.
- No ads, no tracking, no cookies. The page you are reading loads nothing from anyone else.
- Syncing between devices is optional and end-to-end encrypted: we store data we cannot read.
- Anonymous usage numbers are off until you say yes.
Coaching? Teach with your students' own mistakes
A coach plan covers your students' Pro, so they pay nothing.
Invite by email
Your student sees exactly what they are agreeing to before they accept.
See progress, never games
You see a small summary the student chooses to share: counts and percentages, never their games or opponents. They can stop at any time.
Assign puzzles
Build a set from any position and its answer, give it to some or all students, and see who solved what.
Free, and Pro when you want more
The free app is complete enough to improve your game. Pro is for daily training.
| What you get | Free | Pro |
|---|---|---|
| Load games from chess.com, Lichess or a PGN file | Included | Included |
| Replay board, basic analysis, mistakes and time tabs | Included | Included |
| Openings, Explorer and Coach tabs | Included | Included |
| Play your own moves and see engine lines in the replay | Included | Included |
| Backups and export of your own data | Included | Included |
| Puzzles from your own mistakes, with hints and streaks | 5 per day | Unlimited |
| Export puzzles for the trainer | First 5 | All |
| Careful analysis (deepest search) | Not included | Included |
| Missed puzzles come back after 1, 3, 7 and 21 days | Start them yourself | Automatic review queue |
| Weekly training plan | Preview: 1 habit, 1 game | Full plan with tracking |
| Trends over time | Accuracy, last 8 weeks | All trends, months and goals |
| Sync across devices (encrypted) | Not included | Included |
| PDF progress report (the picture to share stays free) | Share a picture | Picture and PDF |
Cancel any time and keep Pro until the end of what you paid for. 14-day refund, no questions asked. The final price, with any tax for your country, is shown before you pay.
Questions
Is Chess Mirror really free?
Yes. Loading your games, analysing them, seeing your mistakes and practising up to 5 puzzles a day are free. Pro adds unlimited puzzles, the deepest analysis, an automatic review queue, the full weekly plan, every trend, sync across your devices and the PDF report.
Do my games leave my device?
No. Your games are analysed on your own device. If you turn on cloud sync, your analysis results, puzzles and progress are encrypted on your device before they are uploaded, so we store data we cannot read. Your full games are not uploaded.
Which sites can I use?
chess.com and Lichess (your public games), or a PGN file from any other site.
How good is the analysis?
It uses Stockfish 19, a very strong open-source chess engine, running in your browser. You can trade speed for depth. Like any engine analysis it can occasionally be wrong, and it is a training aid, not a guarantee.
Does it work offline?
The installable web version works offline for everything that happens on your device: analysis, puzzles, plans and trends. Loading games, signing in, syncing and paying need a connection.
Do I need an account?
No. An account (an email address and a one-time code, no password) is only for Pro, syncing and coach features.
Can my coach see my games?
No. If you join a coach, they can see only a small summary that you choose to share: counts and percentages, and your first result on puzzles they assign. You can stop sharing at any time, which deletes it.
What happens if I stop paying?
You keep everything on your device. Pro features lock again, and cloud sync becomes read-only: you can still download or delete what is in the cloud.
Can I get a refund?
Yes, within 14 days of paying, no questions asked.
Does it work on a phone?
Yes. It works on phones and tablets, and you can install it on your home screen.
Is it connected to chess.com or Lichess?
No. Chess Mirror is an independent app. It reads the public games you ask it to load.