Next Square app for iPhone and iPad

This game is quite simple but quite fun and addictive to play.
The mission of the game is to connect all the squares which do not have a circle inside in a single stroke. If a box is connected 2 times or cut each other ramp, your score will be subjected.
This game have 4 levels and each level has some screens to play, players turn to play the screen at each level and automatically go to new level when the previous one is finished. Total time in the 60s, players try to play and get as many points as possible.
Each level, the circles are drawn in different colors.