Caltrilo
01 / ANALYZE
Review your games in depth
Explore Stockfish evaluations, evaluation trends, and candidate moves. Import PGNs or games from Chess.com and Lichess.
YOUR GAMES. YOUR NEXT BETTER MOVE.
Turn that move,
into your next better move.
Don’t stop at reviewing.
Find your weaknesses in your own games. Practice them. Remember them.
Caltrilo brings game analysis and repeat practice together.
Free game analysis. No app account required.
Analysis and training data stay on your device.
YOUR NEXT BETTER MOVEGame → Analysis → Practice
Return to that position.
Your own games become your training material.
Your own games become your training material.
An actual Caltrilo board from a real game.
MADE FOR YOUR IMPROVEMENT
Your own mistakes.
Practice that matters.
Go beyond general puzzle sets and revisit the chances you missed in real games. Analyze and practice in one place.
02 / PRACTICE
Build puzzles from your weaknesses
Generate tactical exercises from analyzed games. Use hints and move explanations to revisit the opportunities you missed.
03 / REMEMBER
Repeat, remember, improve
Review with spaced repetition. Repeat a fixed Woodpecker set and track your accuracy and solving time.
LOCAL BY DESIGN
Your games stay with you.
Game analysis runs in your browser. Caltrilo has no analysis server that collects your games, evaluations, or training history. Manage your own data with ZIP backups.
External game imports, initial app loading, purchases, and license checks use a network connection. Saved data is specific to each device and browser.
HOW IT WORKS
Start with one game.
1. Import a game
Choose a PGN or import from a chess website. You can also begin with the sample games in the app.
2. Analyze and create puzzles
Choose your side and analyze the game. Turn suitable positions into training exercises.
3. Make review a habit
Use spaced repetition and fixed sets to practice the mistakes you want to avoid next time.
SIMPLE PLANS
Start free. Go Pro when you want more practice.
Caltrilo Free
Free
For exploring analysis and building a daily practice habit.
- Unlimited game analysis
- 5 positions per day across spaced repetition and Woodpecker
- Local storage and ZIP backups
Caltrilo Pro
US$5.99 / month
US$59.90 / year
An annual plan for a longer training habit.
- Everything in Free
- Remove the 5-position daily training limit
- Purchase and manage your subscription in app settings
Paid plans renew automatically. Check the currency, taxes, total charge, and renewal terms at checkout. After purchase, enter your Polar license key in app settings. Cancel through the subscription management portal.
QUESTIONS, ANSWERED
Frequently asked questions
Can beginners use Caltrilo?
Yes, if you want to review your own games. Start with a sample game and the Free plan to explore analysis and practice.
Does my data sync between devices?
There is no automatic sync. Transfer your data with a ZIP backup. Verify your Pro license in each browser you use.
Is analysis different on Free and Pro?
Both plans offer unlimited game analysis. Pro removes the daily training limit. Analysis speed depends on your device and settings.
What happens when I cancel Pro?
You can use Pro until the end date shown at checkout or in the subscription portal. Once the license expires and the app verifies it, you return to Free. Your locally saved games remain available.
Take one step toward your next game.
Today’s game. Tomorrow’s practice.
Open Caltrilo for free →