I have never installed a 3rd-party keyboard on an iOS device before, preferring always to just use the native keyboard since 2007-ish. I just upgraded from a 5s to a 6s. This is the largest screen I’ve ever had in a phone, and I have small hands. One-handed typing immediately became painful and I’m frequently coming close to dropping my phone. Today I decided to look for a keyboard that solves this problem. I installed a couple, and have settled on this one. It’s incredible. I have no idea how tiny mode works, but it generally does. Even full-sized and slid to one side is plenty easy to use with one hand. Totally worth the purchase price.