Qroon by Yuuma Sakata FREE

 Qroon comes from Yuuma Sakata. I believe he's from Japan.  The object is to use the blue balls to align them to trap the red balls in between them to destroy the red balls.

This is a fun little game!
Some features:
1. The blue balls cannot get trapped in between the red balls.
2. The blue balls always travel together, making it a kind of double maze.
3. The red balls sometimes travel back and forth which adds a timing/dexterity element.
4. The yellow blocks with squares: they can be pushed a la sokoban.
5. The yellow blocks with cracks: the force of the magnetic balls will go through them and crush them into oblivion.
6. Starting on level 21, there is a reverse button which trades all red & blue dots.

I don't know how many levels there are.  The graphics are okay, they could be better.  What's important are the actual puzzles; some are quite clever.
https://itunes.apple.com/us/app/qroon/id1354363903?mt=8
https://play.google.com/store/apps/details?id=tmy.jack.Qroon