Click the Button: puzzle app game for iphone, ipad

Amedeo Tamburrino is the author of Click the Button which is very challenging. The objective is to get each button in a pushed-down state. If you click on yellow, then all of the yellow will change direction, some may go down, others will go up.


If you click on a button that looks like an equal sign, two things happen. If it's blue, then all the blue buttons will change.  Second, all the buttons in that row or column will shift too.
Click the Button is a serious set of puzzles. My only qualm is the color scheme with the white background. Maybe the buttons that are still in an up position could be displayed in a more pronounced manner.
https://itunes.apple.com/us/app/click-the-button/id905747766?mt=8