Unfortunately, like the "Birthdays" calendar, you can't unsubscribe or otherwise remove the "Tasks" calendar. The best you can hope to achieve is to not have any entries appear in your calendar (by de-...
Here is what I do:
reduce my remaining uncompleted task list as much as I can.
create a new task list with a very similar name
move the remaining uncompleted tasks to the new list
DELETE the old list....
(See also: my accepted answer)
The closest answer that I have is renaming an existing list.
Edit: Adding example
If you have:
And want A B C D, then rename
List B ...
The latest version of Google Calendar Android app shows all your reminders from Google Now and Keep as well.
For your second question, you could create a checklist/tasklist on Keep ...
If you own all your Calendars, you can drive Tasks and Reminders to the bottom of the list by changing the names all of your calendars to be alphanumerically above R. I use numbers to make them appear ...
To mark all completed tasks as uncomplete, I wrote this little snippet in some spare time today, which you can run in the browser console (F12) of a modern browser, when the "completed tasks" list is ...
I'm also an old Google Tasks Canvas user, and I built a complete replacement web app for it (with upgrades) called GTaskD that you can use for free: https://tasks.gtaskd.com/
Warning: 2019-08-30 is ...
This is the script I use in greasemonkey:
Almost, but not quite. (At least, with Gmail and Google Calendar alone.)
While you're reading your message, open the "More" menu and choose "Add to Tasks".
This will add a task to your Google Tasks ...