We created a new app to measure small and long distances. The app is completely free till 50 cm or 2ft otherwise you need to upgrade (it's a yearly subscription).
This ruler is highly accurate with short distances and also for very long measures, way beyond the limits of a physical ruler. Take this ruler wherever you go! You must give it a try!
Link to the app:
Use AR technology to simply measure length in cm or inches using your iPhone or iPad.
The most comfortable and easy to use AR ruler for your iPhone/iPad.
You can also change the measuring points in real time to be more accurate.
if you can write down what you like on the app and what not. Any feedback would be highly appreciate.