What's New

This app has been updated by Apple to display the Apple Watch app icon.

* Eight years was a nice run for T&L 1.0, but 2.0 is finally here to make the app a bit more up to date.
* It still only does one thing, but now it does it with less of a retro feel.
* You will need iOS 8.4 or later for this one, though.
* Please be kind and give the new version some stars to welcome it into 2016!

App Description

Thunder & Lightning has (barely) one practical purpose: to measure your distance to a sound source. It works for thunder and lightning, fireworks, rocket launches, or other loud events visible from a (hopefully safe) distance away. Just press the Lightning button when you see the event, and Thunder when you hear it. Modern technology does the rest.

To perform this trivial task even more accurately, you can enter the temperature of your surroundings to more precisely calculate the speed of sound. You can also choose between U.S./Imperial and metric measurements depending on your personal unit preferences.

Should its intended purpose be insufficiently useful, this application can also be used as a reasonably precise (if redundant) stopwatch, a speed-of-sound calculator, a Fahrenheit/Celsius converter, or as an odometer if you happen to be traveling at precisely the speed of sound.

Note: Use of application while operating supersonic aircraft is not recommended or approved.

iPhone Screenshots

(click to enlarge)

Thunder & Lightning screenshot 1 Thunder & Lightning screenshot 2

App Changes

  • August 15, 2016 New version 2.0

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