A method, apparatus and computer program product are provided for collecting activity data with a removably attached mobile device. The mobile device may be moved to various holders configured to be used in different activities. The data is collected according to a determined activity. The start and end of a session is automatically detected based on connectivity to the holder. Metrics may be tracked for specific gear, as well as various spans of time such as sessions, seasons, and/or lifetimes. Milestones and highlights may be determined for various combinations of the various activities, gear and/or terms.