Do not use. Will make you more dumb. – Chess Trainer Review

I give this App zero stars it's not even worth one star. However they make you pick at least one. It wasn't even worth the ten mins it took me to complete it. There are very severe bugs in this app. Many of the solutions have multiple ways of solving in equal or less moves while better protecting your pieces. Multiple scenarios give you mate where the king or other pieces can easily block or defend and change the tide against the attacker drastically. Do not use this if you are a novice, want to improve, or just want interesting scenarios. This is a very sloppy and poor excuse for a chess app.
Review by Melesmus on Chess Trainer.