I implemented that in Objective-C when the iPhone was new-ish. It was a fun demo on a touch screen. It was surprising how well it worked for how simple it was.

I implemented that in Objective-C when the iPhone was new-ish. It was a fun demo on a touch screen. It was surprising how well it worked for how simple it was. https://github.com/ddunkin/dollar-touch https://github.com/ddunkin/dollar-touch