Functional

Changing settings should instantly reset timer and update times.
When timer finishes it should notify user (best without the use of any server)
Finished Focus Timer amount should be shown and counting
Settings should be saved for the user
User should be able to skip timer
Add option for darkmode (and automatic system recognition for darkmode)
Add option to ask again for notification permission (maybe in settings page)
Open webapp when clicking on notification (After some testing it seems that chrome does not open the webapp but firefox does)
Add sound effect for finished timer
Add button to reset settings to default

Quality