thure
Thanks for your screenshot.
But there is 14 minutes more screen time on your Signal app.
And yes, my experience is really exactly the opposite of yours.
I am using Threema's shop version, not Libre, because I avoid to use F-Droid and the long times for updates.
Although it is an external repository with Threema's own signature (i.e. more secure than F-Droid's uniform signature for all apps), the distribution of new app versions there is very slow (almost a week delay is usual).
If you use the Threema app directly from Threema's website, you have the choice between Google's push service or Threema's own. And you have in-app updating, which means you are notified by the Threema app as soon as Threema releases a new version and can initiate the update directly from their app.
So you don't need an external source, which is also better for security.