4 stars: I'm using the mobile Android app, and it doesn't show me which module and which unit I last played. Please fix this. Also, when you promote a pawn in tactics, it should give you a choice as to which piece to promote to and then show the pawn transform into the new piece rather than just giving you an automatic pass. Other than that, the app is great.
5 stars: 04/07/2021: Problems: Endgame module 3, board 52, does not autocomplete if Kf6 then drives pawn forward, but works with Kd6. Endgame module 5, board 56 does not complete nor allow advancement. Love this chess trainer! It's not flashy or complicated but forces pattern recognition. I've learned how to play correctly in difficult endgames with little thinking. You can pause to reflect or auto advance to next problem based on settings.
3 stars: I really like the problem sets that the app offer, and how it incrementally introduces new chess patterns. However, I was not able to restore my purchase on my tablet, so I was only able to use the phone. If that isse is fixed, I would highly appreciate it.
3 stars: It's not for offline players and it's difficult to orient in game
3 stars: Doesn't mark what units you have done. Any thing to mark what one's I've finished would be helpful
5 stars: Awesome app. I've been using it daily for quite some time now, working on my chess skills and I would highly recommend this app to anyone, perhaps more for advanced players but also to others wanting to become good...