Swype is my favorite keyboard on Android. I replace the default Keyboard with it because I love the ‘swyping’ action that allows you to ‘type’ without lifting your finger off the screen. It’s one of those things that once you’ve used it you can’t go back to using a ‘normal’ keyboard.
A similar keyboard recently came to Windows Phone 8.1 (not via Swype mind you) and now Apple too allows third-party keyboards so you can use Swype on your iOS devices too.
For a limited time it’s free on iOS (normally .99) so go get Swype from iTunes while you can.
So far on my iPhone 6+ it’s performing well and word recognition is excellent. It’s likely to become my default keyboard at this rate !