The AdPreviewer is a tool created to help you preview your ads rendered by FreeWheel iOS AdManager. It is essentially a player that integrates with FreeWheel iOS AdManager that plays back FreeWheel ad responses. You can use the online AdPreviewer Configurator tool(http://adpreviewer.freewheel.tv/) to compose your own ad response that contains the ad you want to preview, or use a captured ad response to verify in the AdPreviewer.