Really cool app. But I only use it when absolutely have to. Like my other hand is carrying something and cant use the full keyboard. Id love to use this as my keyboard always but the gestures to backspace are not consistent im assuming because of 3D Touch on the 6s/6s Plus. It can also be a little glitchy. Closes out the keyboard and opens the standard qwerty keyboard. Overall I like the concept. I would recommend this app to iPhone 6 Plus users that need one handed operation or struggling to convert to a new phone with a larger screen.
Lordkaaaaden about Thumbly Keyboard