When it comes to delivering a hi-fi prototype for mobile devices, I can only think of three names: Pixate, Framer, and Origami. After playing for awhile with all three tools, for now, I have decided to stick with Pixate: it allows you to develop your idea without working too much on the code or dealing with the Quartz Composer UI.
Other solutions, like Invision or Marvel, are faster and easier to use, but you can’t push the boundaries when you need to design complex interactions or transitions.
In short, I do not think there is currently a perfect tool on the market, but there are just right tools to accomplish specific tasks. …