Today Swiftkeyx is free from amazon
steps to I Followed:
1. click the link Amazon.com: SwiftKey X: Appstore for Android
2. get this app; enter your account or create one
3. download amazon app to your device .
Note: Right after you download amazon app go to amazon.com open your account and click on 1-click setting under account settings, enter your mail address and credicard info. lol dont worry, they wont charge anything.
(i actually enter a old credit card, they it's been cancelled lol)
4. go to your device and download swiftkeyx for free.