The modern Android and iOS SDKs are both really quite nice. There are obviously weak spots in both, but neither could really be described as "crap" or "over-eng

The modern Android and iOS SDKs are both really quite nice. There are obviously weak spots in both, but neither could really be described as "crap" or "over-engineered." I'm not familiar with WinRT. Still, Qt is pretty impressive. The main problems it suffers from are it's weight, and the issue that all cross-platform frameworks suffer from, in that the GUIs never feel quite right.