Description:
ThunderWonder! calculates your distance from lightning.
Tap the "Flash" button when you see lightning then tap the "Boom" button when you hear the thunder.
ThunderWonder! uses NASA speed of sound calculations to estimate your distance in kilometers and miles.
High Altitude checkbox compensates for thin air (where sound travels slower) when you’re in the mountains.
ThunderWonder! works with any sound source including jets, echos, gunfire and sports sounds.
