A system and method for keeping track of events. In the preferred embodiment, a counter is created on a mobile device and is set to update one or more values based on the occurrence of a triggering event. The triggering event may be based on the user pressing a button or otherwise interacting with the mobile device, or may be based on other functions of the mobile device, such as the arrival in a particular location as determined by GPS. Counters may be shared with other mobile devices, and data in the counters may be stored on the mobile device or in a remote location. Mobile devices can share data from their counters with other mobile devices, and counters can be set to compare data between different mobile devices. Alerts can be set based on predetermined criteria.