Aha! Seems that you don't want to miss anything while you do your math. Or perhaps you just want to avoid obstacles on your way.This software is perfect for you, this app will let you use a calculator and in addition it will let you see the camera view on the background of the dialer. Make sure you see the preview images.This application is useful while sitting or standing. Email us to firstname.lastname@example.org if you have any question.