I am looking for a quick way to sketch some apps and this might be the simplest way to do so even though it misses a couple of things.
Some of the things to improve:
* Snapping. Sometimes when the area is small, the snapping is annoying as I won't be able to vertically center text in the box even though it should be possible physically. Maybe, turning off snapping?
* More text settings (font size at least)
* Predefined elements. Surely, it must be kept simple but things like arrows would help a lot and my crooked hands won't have to draw crooked arrows :)