Now You Can Paint With Your Phone?

I am new to this topic. I have a simple cell phone where you can make calls, text and take pictures but I wasn't aware of these applications at all. Maybe it's because I have yet to see a real live iPhone. I have only seen them on television, so the idea that an artist can paint a masterpiece with it baffles me. I feel like sometimes I am stuck in the past with my dial up Internet and land line phone. There is so much technology that I have never experienced and this new digital art is cool but completely foreign to me.