Cliff Height Timer is a free iPhone app developed by Mark Rober, a well-known Science/Design/Creativity YouTuber. This simple yet ingenious app utilizes basic physics to accurately determine the height of a cliff or the depth of a well. By timing how long it takes for an object to hit the ground, the app leverages scientific principles to calculate the precise measurement.

With Cliff Height Timer, you can effortlessly measure the height of a cliff from the ground by throwing a rock right up to the top and starting the timer at its apex. The app then takes care of the calculations, providing you with an accurate height measurement. This makes it a handy tool for outdoor enthusiasts, hikers, and anyone curious about the heights of natural formations.

The app's user-friendly interface and straightforward functionality make it accessible to users of all levels of technical expertise. Whether you're a science enthusiast or simply looking for a practical way to measure heights, Cliff Height Timer is a valuable addition to your iPhone's utility and tools repertoire.