4 stars: Great tool for learning. Made me realized when playing live how many error we make, might even see a checkmate as a simple check If i could add a feature it would be to explain why such move in not the best one instead of saying wrong move. Is it wrong because it is really an error or its not the coded option in this case? This would help more since we could understand the difference in moves.
3 stars: Let me say this again because I can't respond to your comment, developer. Pressing back is a very common thing people do, and when back is pressed, the app closes. It's very annoying. Make pressing back close the menu. It's useless to make back to close the game. Fix this and I'll change the rating.
5 stars: I've been playing chess for a decade and recently got to a point where improving my game became something of an obsession and this app was everything that I was looking for. Well organized and easy to navigate. My new #1 weapon in my chess arsenal. Highly recommend.
4 stars: This has a lot of good puzzles, organized by category, which you can play through to boost your tactical prowess. There are occasionally issues with piece selection. Also some of the puzzles, such as the first hard mate in 4+, seem to have multiple solutions. Figuring out the expected one can be annoying. Good overall though.
5 stars: An excellent and generous free app. Lots of situations for practice. I will definitely be purchasing the pro version soon. It looks like very good...