A mobile application to conduct an auction based on physical presence is provided. The mobile application may be provided by a system comprising one or more modules. A notification module may identify an item to be sold at an auction. If a pre-auction window time period has arrived, the notification module may transmit auction notification messages to a plurality of client devices located within a predefined geographical area. A bidding module may conduct the auction by providing an auction interface to the client devices within the predefined geographical area. The auction interface includes an option to bid on the item. A completion module may transmit a confirmation to a winning auction participant.