Satisfying and it is free
Nice app, good tactics examples, nice animation.
Very nice and helpful!
Fine training tool.
Attention! You should have an internet connection on the first launch to verify your purchase!
* Added cloud sync option for statistics and bookmarks
* Added "Auto hints" option - you can use it to turn off automatic hints after wrong move attempts
* Added solved exercises graph on the statistics screen
* Improved theory mode
* Improved puzzles sharing into images
* Various fixes and improvements