Very easy to understand, very simple. Works as expected. Very
responsive between different devices. Seems like an obvious use case for
Sandstorm.
I figured out it was vector based when I tried deleting.
One
issue I see is when trying to pinch zoom. On my Android-like phone,
zooming out works, but zooming in starts to make the whole UI zoom.
Zooming either direction on iPad is worse.
It's
also awkward when you're really zoomed out and you want to drag it to
the center. I guess you can't do it, it wants to keep the top-left of
the drawing data at the top-left of your window.
Not blockers, I think you can work around those.
But one thing that does seem to be altogether broken is the Download button. It doesn't do anything.