Abstract: Systems and methods for serving offline ads in a mobile device are provided. The mobile device includes a processor configured to determine whether the mobile device is online or offline. The mobile device includes a screen configured to display an offline ad in an active mobile application when the mobile device is offline. The mobile device includes an impression database configured to store impression information with the displayed offline ad and a communication unit configured to synchronize information between the mobile device and an online ads server when the mobile device is online. The synchronized information includes at least one of the following: offline ads impression counts, offline personalization information, and ads related to the offline personalization information.