Kapuila is a different kind of App combining a fun game with exercises for your brain.
It has two parts:
Memory: Test and train your short term memory.
Logic: Test and train your ability to solve logical puzzles.
The free version is alternating between the two kind of puzzles.
Premium version will let you play all levels alternating or Memory/Logic as individual games.
https://play.google.com/store/apps/details?id=air.com.wegolf.kapuila