Suresh Selvaraj on how Mitya came about:

Imagine an author had to write a novel using Photoshop. Or, a programmer had to code in Word. Doesn’t even make sense, right? But this is what Interaction Designers are forced to put up with right now. IxDs have to use After Effects, a static video editing tool, or Quartz Composer, a programming tool, to create their visual interactions! They have to do their job using tools that were originally built for someone else!
After watching the demo video, I think Mitya has the potential to be a great application for creating interactive prototypes for mobile apps.