I think they realized the freemium model is the way to go. They've opened a new store with premium themes available. Probably in the long run will make more dough from the extra users who never would have bought the full version anyways.
May give this keyboard another try now. Previously using Google's.
App download:
[Only registered and activated users can see links Click here to register]
Press release from Swiftkey:
Show Content
Spoilerfrom today, SwiftKey Keyboard will be completely free to download on Google Play! We want to take a moment to give you a bit more information and explain some of the thinking behind this exciting change.
We've come an incredibly long way these past six years, from two university friends with an ambitious idea, to becoming the global best-selling app on Google Play the past two years running. We founded SwiftKey to make it easier for everyone to create and communicate on their mobile devices, and as a company we're working hard to reach that goal.
This is why today we are making SwiftKey free. We believe this change is the best way to achieve our global vision for SwiftKey, as we can now reach many more people around the world without price as a barrier. That said, we want to reassure you that the SwiftKey features you have come to know and love will remain yours.