Unusually to other apps, the measurement process is based on the sound. Specifically, the distance traveled by a sound way from point A (phone speaker) to point B (earphones). The algorithm behind the app is fueled by advanced math! It's pure science!
Using the advanced sensors on the latest iPhones, Instant Measure lets you instantly measure the distance between your camera and an object. Just use the front camera and align the marker on the center of the screen to instantly get a measurement readout.
An impressive set of design utility tools to measure distance, dimension, position, pick colors, test contrast and align elements, anywhere on your screen.