Once a circle with a dot appears on the screen, you’re ready to start measuring.If you’re using it for the first time or haven’t opened it in a while, follow the instructions on the screen to help calibrate the app and give it a frame of reference.Launch the Measure app (download it here if you deleted it).You could even use it to measure your height or the height of someone else if you want, and the best part is that it’s actually pretty accurate. This is because thanks to the use of augmented reality technology, Apple has actually developed an app called “Measure” that uses your smartphone’s cameras to help measure objects. Have you ever gone out and saw a piece of furniture that you would like to put in your home but you weren’t sure if it could fit? Since not all of us walk around with measuring tapes or rulers in our pockets or bags, it would be rather difficult to get the measurements, but if you own an iPhone, you could be in luck.