Stack & Crack by Jambav, Inc. $.99

 Stack & Crack comes from Jambav, Inc. The object is to slide the tiles around the grid and stack them into 1 pile on the glowing endpoint.

When 2 pieces are stacked, the tower moves in the direction of the tile that's on the bottom. That's a bit awkward.

The puzzles are well designed.  The graphics are good too. 

Landing on certain squares makes your tower invert.

There are approximately 100 levels.  I have not done many, but I do like this game.

https://itunes.apple.com/us/app/stack-crack/id1290219110?mt=8
http://jambav.com/