Time Lapse Calculator Lite, a useful app for your Android device, is a tool intended to aid in time lapse photography. Simply enter your desired output (including the rate and length of time you want the output video to be), and the app will tell you the photo interval that you should set your camera to.

This ad-supported Lite version of Time Lapse Calculator allows you 20 minutes’ worth of use, then it prompts you to purchase the full version.

Note: this app only calculates information you enter. It does not take photos.