But the app is really unstable, I've using it for an hour and it's the first iPad app I have that crashes every single time (I have around 40 iPad apps and 100+ iPhone apps). And to make things worse it doesn't save anything, so, if in the middle of your work you want to delete something, be prepared to lose all of your nodes.
If you want to use this for Process drawing be warned that the app doesn't appropriately handle multiple arrows between two shapes, this is annoying if you're trying to use a Diamond as a conditional to return to the previous step.
And its looks and edit style is so iPhone-ish that you can easily tell that it's the same application with a bigger canvas, developers didn't even try to take advantage of the bigger screen and to define a smoother way to rename nodes.
I give Instaviz two stars just for the way it recognizes what you draw, and that's all about this app.
-- Desde Mi iPad
