Microsoft SwiftKey

Microsoft SwiftKey Keyboard is a robust and configurable third-party keyboard. It first appeared on the market some years ago with a predictive engine unlike any other keyboard, and the app has expanded significantly since then. You don't have to pay anything because it's a free download with free themes.

Other features include a separate number row, SwiftKey Flow, which enables motion typing, various language compatibility, cross-device library synchronization, and much more. It's about as excellent as it gets in terms of keyboard performance. True, Microsoft now owns SwiftKey, but thus far, they haven't messed it up. Gboard, Google's keyboard app, is also quite nice, and the only reason it isn't on the list is to prevent having three Google applications in a row.

Price: Free
Download Link: https://play.google.com/store/apps/details?id=com.touchtype.swiftkey