I am moving from Android to iOS shortly, and I am searching for an "auto-text" app, which many replacement keyboards on Android have, and which is standard on Blackberry. If you're unfamiliar with auto-text, it permits the user to set up shortcuts, or macros. If I type "idk" it expands to "I don't know". Surely, iOS offers this--please let me know the name of the app that I should be looking for. Thx.