Free chess game analysis and personalized training built from your own games
Stage
Not given
Startup
Founded
Not given
2026
Based in
GB
Not given
Pricing model
Free
Freemium
Pricing
Not given
Free plan includes game reviews (150 per day limit), puzzle practice, Blunder Preventer, one free session weekly of each premium trainer, 2 repertoires up to 10 lines each, and one scouting report monthly. Premium costs $2 per month, $12 every 6 months, or $20 per year, unlocking unlimited access to
Key features
Build games from YAML files without code
Write custom mods in AssemblyScript or Rust
Safe execution of custom code inside the engine
Cross-platform support for macOS, Windows, and Linux
Open source codebase
Move-by-move Stockfish analysis of Chess.com and Lichess games
Blunder Preventer trainer to spot tactical mistakes
Opening Improver with opening encyclopedia and repertoire trainer
Time Trainer for practicing under time pressure
Visualization module for calculating forcing lines
Resourcefulness training for difficult positions
Scouting report showing skill breakdown and training recommendations
Analysis board with Stockfish 19 running in browser
Daily chess puzzles
What makes it different
No coding required to build games
Extensible with custom conditions and triggers
Multiple programming languages for mods
Personalized training built specifically from patterns in your own games rather than generic material
Recurring mistake detection that turns common errors into focused training modules
Free game analysis without sign-up for casual users
Integration with Chess.com and Lichess accounts for automatic game import
Affordable premium pricing starting at $2 per month
Stage
ChessVox