Joe Caiati, writing for The Sweet Setup:
A markup app can be used in many different ways, like showing design changes, pointing out something funny to your friends, or using it as an educational tool.1
With Apple integrating markup even further within its mobile operating system, it’s clear that this is an essential tool to have available. We’ve tested a folder full of options and it became clear that Annotable is the best markup app for iOS.
This has become a must-have app for me.