Swid

Category	Price	Seller	Device
Games	Free	EntroByte LLC	iPhone, iPad, iPod

The goal of each level is to slide the pink circles over the squares in order to make the value of the circle zero. Each pass over a square will subtract that value from the circle.
If all of the squares on the level are removed and all the circles are equal to zero, you win.

The first few levels start off simple enough, eventually evolving in to mayhem that will test your patience, logic and math in a frustratingly fun way.

The game is free, being support by Ads with an optional in-app purchase to unlock an ad-free version.
No lives. No timers. No boosts.
Play as much or as little as you want in any session without worry about 'hearts' or gimmicks.