Thunder Distance Calculator app for iPhone and iPad

Do you want to know how far away the thunder is? The Thunder Distance Calculator can help you to find the answer. It calculates the distance based on the time shift between the occurrence of lightning and thunder. Simply press the lightning button when you see the lightning. Press it again when you hear the rolling thunder.

Features:
- Map view with current position und calculated positions of the lightning
- Colored areas of danger zone - Red up to 2.5 km - Yellow up to 5 km
- Distance unit in meter or feet
- Warning sound on distances less than 2.5 km