aCalendar Tasks offers
- tasks management as separate module, which shows you your tasks as list (sorted A-Z, by due date or in manual sort mode with subtasks).
- integration into the calendar views, so you can see your tasks on the due date and quickly create tasks for any date.
- a dedicated Tasks widget
- timed tasks
- recurring tasks
- contact linking
As tasks backend we offer synchronisation with
- Google Tasks
- Open Tasks https://play.google.com/store/apps/details?id=org.dmfs.tasks (for local tasks and Caldav tasks)
Outlook / MS Exchangeunfortunately Android offers no interface to tasks from Outlook or MS Exchange Google Reminder / Google Keepunfortunately Google offers no interfaces to these services