AdMob for iPhone geared towards apps for iPhone and iPhone web sites and allows advertisers to create ads that will be served to iPhone users. There are 8 types of Actions that advertisers can choose from to engage customers on the iPhone: Canvas, Maps, App Store, Audio, Web, iTunes, Video, & Call.
AdMob also promotes the “iPhone Download Exchange,” which allows application developers in AdMob’s ad network to allocate a portion of their ad inventory to an exchange. The exchange is used to help developers drive downloads. The idea is for its network of companies to help drive traffic to each other and of course increased downloads will advertisements, advertisers and ADMOB.