A mobile communication device that replenishes and manages ads to display on an active application. The mobile communication device comprises a radio transceiver, a processor, a memory, a plurality of applications, stored in the memory, wherein each application comprises an ad client, and an ad manager, stored in the memory. The ad manager, when executed by the processor, requests a plurality of ads from an ad gateway associated with the network associated with the mobile communication device. The ad manager then receives a plurality of ads from the ad gateway. The ad manager then stores these ads into an ad cache, embedded within the memory of the mobile communication device. The ad manager receives a request from an ad client of one of the applications for an ad to display. The ad manager sends an ad selected from the ad cache to the ad client in the active application.