Completed task archiving
The completed task view gets pretty crowded after you've used SlimTimer to track a few projects. Allowing users to archive these tasks in an organized way would help clean things up, leaving the completed view as an area for completed tasks for currently active projects only. This archiving feature could be nicely integrated with the project-based grouping I suggested earlier -- projects that are marked as finished get automatically archived with all their tasks grouped together.
strongly want this feather!
it's a nightmare that cannot archive completed task in mobile phone
I think that's a great idea, and I have a suggesetion that ties into this one. If folders based on tags could be created in the active SlimTimer window, that would make it more visually organized too (which would be nice if you have 20+ active projects at once).