Abstract: A travel application for a mobile device is described. The travel application can include an application database which resides on the mobile device and application code for processing instructions stored in the application database, such as instructions for creating pages of information output via the travel application on the mobile device. Without recompiling or reinstalling the travel application on the mobile device, via updates to the travel application database, the navigation structure of the travel application can be changed, a travel data section can be added or removed, a filter for an existing travel data section can be added or removed and the output structure for any of the plurality interface states associated with the travel application can be modified. By executing from an application database stored locally on the mobile device, the travel application can provide some amount of guaranteed functionality when network access is unavailable.