It will auto-uppercase stand alone "i", but, yeah, as far as I know it doesn't do general auto-correct. I've never been a fan of auto-correct, so I regard that as a feature. I recognize that that's a minority position, though.

Actually, the uppercase support is one thing that I dislike about MessagEase. For swipes you just swipe one way and then back to where you started, which is easy and natural. For taps (your most frequent characters) you have to draw a circle. I've found this to be error prone, and the fact that it's different for the two sets of characters tends to trip me up. If you text as much as a teenager, you could probably get this into muscle memory, but I can never quite get there.