[auslegung]

Have you thought about creating keyboard snippets for common words or phrases? Similar to how iOS replaces omw with On my way! You could create replacements at the OS level that would apply to everything you type. Build them as you go so that your average characters per word is 3-4 characters, it might work out.

[borncrusader]

This is an interesting idea. I've used tools that have autocompletion and also on vim with a plugin that I use to type notes. But the annoying thing is this is something that I'll potentially have to set-up.

[davchana]

Textpand is a wonderful app for this for Android, no connection, just a happy user.