Technically, the icon displays the app as paused from the time limit. Once you surpass the time limit using the app, you can stop using it or allow you temporarily (1 minute to 15 minutes or stop limiting the usage for today) to continue to use it.
It's a neat option to have this on your phone, but I usually keep expanding my time limit more than just quitting the app.
I think that's what this app is aiming for, allowing you to use the app more time requires more effort than 2 taps.
