Crossinverter app for iPhone and iPad

I like Crossinverter because it’s a simple and absolutely easy logical game.

The aim oft he game is super easy: All buttons have to become black!
The rules are easy as well: Press one button to change the color. A black button becomes white, and a white one becomes black.
But the directly adjoining buttons are changing their color also. (Means the upper, the lower, the left and the right button).
That is what makes the game with every Level more complex and more and more interesting.
That’s life. Don’t forget the neighbors.

I was not able to solve Level 24 (from 100) yet. I’m sure that it is possible, but I don’t believe anyone out there reaches Level 100. Write me an Email with a screenshot of the highscore to tell me I’m wrong.
I have an idea to make it a little more complex ;-)