Loaded with a gorgeous display and a powerful processor, the Kindle Fire HDX is an impressive all-around tablet, especially when it's used for what Amazon Kindles were built for—reading electronic versions of novels, textbooks, and other printed works.
With so many keyboard options available for Android, there's no reason to limit ourselves to the default one, or to just the ones available in the Amazon Appstore. While the Appstore does provide alternatives, such as SwiftKey, it doesn't come close to the selection available in the Google Play Store.
Amazon's Appstore has come a long way since it launched in 2011, with over 250,000 apps to its name. That being said, their app numbers pale in comparison to Google's Play Store, which currently boosts over 1.3 million apps.