GeoTask is a location-based task reminder service that is highly integrated with Google Calendar. It allows users to organize and manage tasks by location on a map-centric interface. Some key features include navigation assistance, location categories, assigning multiple locations to a single task, and more flexible reminder settings than alternatives like RememberTheMilk. A trial version of GeoTask will soon be released to gather user feedback before a full commercial version launches, expected to be priced between $2-3.