Every year since 2007 I tried Qt for mobile development (starting with Nokia N8) only to be disappointed again and again. Making a game with 3d graphics? Drawing charts? no problem. Using ui elements and sensors? You inevitably run into a bug, a missing feature or learn some new framework that works well until you do something that is not in one of the demos.

The team is obviously incredibly talented and their coding style know-how matured over time, and I really want it to work, but unfortunately it still isn't there yet.