did does fire and forget timetracking. you open the app via a global hotkey and type a concise description of the task/event you just completed in the already focused text field. you can add a duration to the event by entering +-signs. they are interpreted as 10 min units and added up to estimate the length of the event.
entering a message like "meeting with paul ++" would result in a record that reads "meeting with paul" from 20 minutes ago to now.