Zero+ for Apple iOS [Free for Limited Time]
A simple iOS puzzle game that is devilishly fun to play. Just add positive and negative numbered blocks to one another to make all zeros.
* Easy to play: swipe blocks left, right, up, or down
* Lots to do: 120 levels and counting…
* Never the same: new levels bring new kinds of blocks
Compatibility: Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.