Trip Hawkins, founder of and now boss of mobile developer Digital Chocolate, has told VentureBeat that and are running scared from the iPhone.

He revealed that Apple's device is "by far our most effective platform", adding that the future is uncertain for mainstream handheld makers Sony and Nintendo as a result.

"We make as much money with these games on one device as we do putting a game on 100 different cell phone platforms. Between the and the iPhone, I think the platform is freaking out Sony and Nintendo," Hawkins enthused.

"Apple has sold 30 million units so far and it has created tremendous awareness. It has taken ground all over the world. But it has only penetrated one half of one percent of its total market."

By Luke Guttridge