Measure

The Camera app isn’t the only first-party app from Apple that takes advantage of the LiDAR Scanner. The Measure app helps turn your iPhone into a very precise measuring tape.
Measure is a simple app that you can use to measure the size of objects and even people. As you’d expect from Apple, the app is simple to use and works great with LiDAR.
The measurements it gives are really accurate and you can even share them with friends or family if you need to. You can also save your measurements with screenshots for future references, or in case you want to share them in the future.