Open Chess APK

Open Chess Serious chess training, free and on your own device. Stockfish game review, 13 bots with personality, 14 challenge bots, 104,000 puzzles, an opening trainer and lessons. In the browser or as an Android app. **No ads, no subscription and no account.** ▶ Try it now · 📱 Download the APK Español · Features · Screenshots · How it works · Getting started · Contributing 13 + 14bots and challenges 104,000Lichess puzzles 3,865named openings 11interactive lessons 6languages $0forever 💡 Why On most chess sites, the tools that actually make you better sit behind a subscription: unlimited game reviews, unlimited puzzles, lessons and an opening trainer. But the engine doing that work, **Stockfish**, is free software and already runs in any browser, and **Lichess** publishes its puzzles and openings as public domain. Open Chess puts those pieces together in one app with a clean, familiar interface. Everything happens on your device: the analysis, the bots and your data. The one thing it doesn't do is play online against other people. | | Typical free plan | **Open Chess** | |---|:---:|:---:| | Full game review (brilliants, mistakes, accuracy…) | Limited | ✅ **Unlimited** | | Puzzles and timed puzzle runs | Limited | ✅ **104,000, no limits** | | Bot assistance (eval, threats, suggestions, engine) | Limited | ✅ **All of it** | | Repertoire trainer | Paid | ✅ | | Lessons | Mostly…