I was amazed it worked as well as it did, considering I have an iPhone 8 without the fancy sensors of the X. It was indeed slightly off on the objects I tested. But for a rough measurement it could be useful.
Apple should keep going with this and pack a whole toolbox inside. There are days when I'd love to use my iPhone as a hammer.
In iOS 12, the Measure app is also home to the Level feature
Apple should keep going with this and pack a whole toolbox inside. There are days when I'd love to use my iPhone as a hammer.