A simulated ad placement bid request supply side platform. The platform comprises a processor, a memory, and a test mobile ad placement bid request generator application stored in the memory. When executed by the processor the application builds a plurality of mobile ad placement bid requests, where each mobile ad placement bid request comprises a test parameter value that indicates the bid request is a test bid request, transmits the plurality of mobile ad placement bid requests built by the test mobile ad placement bid request generator application to the bidding platform, receives winning mobile ad placement bids associated with the mobile ad placement bid requests sent by the test mobile ad placement bid request generator application, and analyzes the winning mobile ad placement bids received by the test mobile ad placement bid request generator application to determine test metrics.