Solid app, good features
This app is very simple, but it does the job well. It offers a bunch of chess tactics puzzles for you to solve. You can analyze board positions with a built in chess engine if you want to understand things better after seeing a puzzles solution.
You get 6 free puzzles daily, plus 150 free puzzles in their library. You can also purchase separate packs that give you a few hundred puzzles for only $1.99 each. Pricing is very reasonable, and its totally possible to just use the app for free.
MadLordOfMilk about
Chess Tactics Pro (Puzzles), v1.05