a widget for Android, so that due tasks can easily be seen without starting the app
Wolfgang Pfau commented
Unfortunately this function (to display due tasks in google calendar) is not available for the free version
Thanks for the suggestion, this is definitely on our list of features to add.
In the meantime you can get all of your due tasks on the calendar of your phone or computer by creating a calendar of your tasks:
You do not even need to have the app installed on your phone to see your due tasks if you are subscribed to the calendar.