Team Tasks

Team Tasks puts a shared team layer on top of Google Tasks. Connect your Google account and your real tasks sync in, two-way: edits push to Google right away, and changes made in Google show up on the board about every minute. On top of that you get shared kanban boards, assignees, comments with @mentions, an activity log, labels and filters, a My Day agenda, list/table/calendar views, recurring tasks, templates, dependencies, reporting, CSV import, and departments with roles. Guests on shared boards are free. Free for teams of up to 3, then $2 per user per month (with a $10 monthly minimum), plus an optional $20/month REST API add-on. It's an installable web app; there are no native apps yet.