Thunderstorm Lite is an Android application that calculates the distance of a thunderstorm by measuring the time between a lightning and the corresponding thunder. This free ad-supported app is developed by SpeedyMarks and falls under the Education & Reference category with Magazines & Newspapers as its subcategory.

To use the app, simply press the 'Lightning' button when you see the lightning and wait until you hear the thunder and press the 'Thunder' button. You can tap the distance to toggle between metric and imperial units. The app also has a history list that shows whether the storm is getting closer or moving away.

The app's background lies in the fact that the speed of light is much faster than the speed of sound. By measuring the time between the lightning and corresponding thunder, the app can easily calculate the distance by multiplying the duration with the speed of sound.

Overall, Thunderstorm Lite is a simple and easy-to-use app that can help you stay safe during thunderstorms by calculating the distance of the storm.