_ If you as a mobile developer don't want to spend money over such tools you can take help of your day-to-day graphic design tool like Fireworks as it has ability to produce basic level prototyping in HTML moreover, with TAP you can create prototypes with animated transitions. Basically Fireworks is a powerful, efficient and extensible software and it works amazingly with other extensions and TAP is one of them. With TAP offshore iPhone development companies create the illusion of a working product. Here iPhone Safari browser can be used to display the results and everything without coding!