7 Android Gestures You've Probably Never Tried (But Really Should)

Discover 7 hidden Android gestures that will change how you navigate your phone. Master these shortcuts to boost your mobile ...
Ars Technica

2-finger tap as "Undo" -- why is this NOT universal in iOS?

Was watching a ProCreate tutorial video a couple years ago, and noticed the instructor using two-finger tap for Undo. 'Holy shit,' I thought, 'WHAT IS THIS BLACK MAGIC? And how did I not know this?' I ...