Others can't see what you're writing Keeps nosy people who are looking over your shoulder from seeing what you're writing. Takes less than 5 minutes to figure out how to use. More capabilities & features than I was expecting.
HatHaway Oh don't do it. Oh my god. Hahaha
Awsome Its cool but the full version is way better
v.4.0 - Android Lollipop Support.
v.3.0 - Enhanced Layouts for large screens.
v.2.0 - Support for more screen sizes.