In the mini-mode, keys bunch into groups of three. An autocorrection system then picks what word you meant to chose out of the possible options, similar to the word prediction systems of Fleksy and other custom keyboards.
How well applications will respond to the dynamically changing height is yet to be seen, as many apps in the store have been coded assuming fixed screen sizes. Over time, though, as developers update their apps, these issues should go away.
Try Amazon Prime 30-Day Free Trial
Minuum will be available soon after iOS 8 is released to the public. Interested users can sign up at their website. Below you can see Minuum’s iOS keyboard in action.