This is really cool! I much prefer writing in longhand (I do for all my fiction writing). However my handwriting is absolutely awful. Maybe I need to try this out and see how it fares -- all the examples on the front page have nice neat handwriting :)
I've tested it with some pretty "awful" handwriting examples from /r/handwriting and it's surprisingly good (think tiny doctor scribbles). Have a go and let me know what you think, it's totally free to try.