Did you ever wonder if your Smile is Perfect? Would you like to know? Here's a fun and easy way to find out - Smile Perfect - Just download and smile. How to use? Step 1. Just smile at the camera and see how perfect your smile is - on a scale of 1 to 100. Tap anywhere on the preview to take a smiling picture and then swipe to see your pictures. The box around the picture indicates how close are you to a perfect smile. Red - Are you smiling? - Score <= 33 - hardly a smile! Yellow - Nice - Score