Thunderstorm Pro is a free lifestyle application available on iPhone that allows users to accurately determine the position of lightning during a thunderstorm. By measuring the time between lightning and thunder, as well as considering the direction in which the lightning was seen, Thunderstorm Pro provides real-time information about lightning strikes.

The application displays lightning strike locations on a map, allowing users to track the movement of the thunderstorm. The spots on the map are color-coded based on time, providing users with a visual representation of the thunderstorm's moving direction. With Thunderstorm Pro, users can stay informed about the movement of thunderstorms and make informed decisions to ensure their safety during severe weather conditions.