A time-based intelligence system provides robust storage, access, and processing of information on a mobile device. An automated mobile assistant system provides automated, proactive and anticipatory services for the user of the system. In an example, a customizable personal mobile device for communication and organization can include a core engine and a plurality of modules coupled to the core engine to perform a different one of a plurality of classes of functionality of the mobile device, where each said module includes a processing element and memory dedicated for use by said module.