Not good compared to similar apps
You can only move measuring lines by touching buttons (rather than just touching lines) where each button is on opposite sides of the screen, rather than on the same side, making measuring many thing sitting on screen very difficult (other apps don’t have this issue).
Also, whenever you move a measure line and let go of button, the line jumps a bit - I’ve noticed other similar apps also don’t have this problem.
This app is also huge ( storage space it uses) compared to others.
MasterFR about
Ruler®, v1.2.2