kboard

Almost all of the Android keyboards offer the same kind of features, including stuff like word prediction and swipe gestures, but that’s not all that you can use. With the help of kboard, you can define a various set of commands, like a macro, and use that to increase your speed.
 
It’s very useful if you need to send repetitive messages to a lot of people, if you want to build custom text emojis and store them, or if you want to retrieve and send an answer from Wolfram Alpha.
 
People can also use kboard to convert a song title to a Youtube video or to convert search terms into site-specific searches.