Good keyboards need not be slaves to the traditional multi-row QWERTY layout. Case-in-point is Minuum, a third-party keyboard most known for a neat, space-saving "mini-mode" layout that crams letters, numbers and punctuation all into a single row. Powered by an aggressive predictive typing engine, Minuum is surprisingly adept at figuring out what you want to type. You can also use it in the traditional keyboard layout, and the app comes with a variety of extras such as predictive emoji typing, cursor and clipboard tools. The mini-mode takes a bit getting used to, but it saves a lot of screen space, which is great on smaller screens.