Thunderstorm Range

Determine the distance of a thunderstorm. When a lightning flashes then press "Start" and "Stop" when you hear the thunder. Due to the sonic speed and time measuring the distance will be calculated.

More features:
- See your actual location on a map
- World map with 500 Cities
- 4-day weather forecast of these cities
- Animation at flash (Start)
- Thundersound at Stop

Scheduled:
- Calculation of the movement, i.e. does it come closer or go away?

System:
- iPhone, iPod Touch, iPad
- OS 3.x or higher
- Internetconnection for Weather- and Wikipediadata