Oh, and I almost forgot to say that. The editor is also used at serlo ( http://en.serlo.org/serlo ) which is the largest educational platform for germany with 1 million MAUs. So there's really little chance of this being discontinued over the next 4 years.
That's what we're doing: http://www.ory.am/sites/ - although there's obviously never the guarantee that a project is maintained. However, all of our other projects have been maintained for over two years.
Anyways, you're now one library richer, that solves a hard problem and we're committed to making it awesome.
Which iphone do you use? Also is it safari? It's currently absolutely not optimized for mobile, as most content creation happens on the desktop. We might though at some point.
I'll resize that, and let you know - could you test again then?