I only let my 3 year old play games on my phone when at doctor appointments. He loves this puzzle app. When you put your finger on the puzzle piece your phone will vibrate and then you slide the piece over to pop in into the puzzle. Once the puzzle is done the picture of what it is is revealed. You can set it to make the piece pop into place if your toddler just gets the piece close to the right spot. Even though my child has very little experience using any sort of electronic game, or using a device where you move your finger on a screen, he was able to figure this out pretty quick and he loves it. It holds his attention for at least 10 minutes. All of the images are cute and fun.