Adrollo has launched a service that enables iPhone app developers to switch between different ad networks without submitting a new application to Apple.

The offering currently supports five different ad networks, with more expected to follow.

From the Adrollo dashboard, developers can review their existing ad setup and specify which ad networks they wish to utilize, as well as how often their ads appear. At the developer's preference, Adrollo can also automatically switch between all available ad networks, using its own algorithm to optimize CPM rates. It can also fill ad units when a given network runs out of inventory.

View the Adrollo demo:

The service is available at no cost to developers. According to co-founder Sam Yam, users can expect to make two times more revenue using the optimizations it provides.

Last month VentureBeat confirmed Google has begun testing ads on select high-traffic iPhone applications.