I use the Opal app to stay away from distractions while I’m studying, using it for timing how many hours I study in a day as well. I would find useful a feature in which you can see how much time you focused in a day, at least for the current one, apart from the “focus report” that has another purpose. Adding this to the app would encourage people to stay focused more, having a view at the end of the week on how many hours did they use the app, and helping them managing their schedule.
Thank you! 
Hey @Anca_Man,
Happy to help! All of this information is featured on the Home tab of the app - it shows you your daily usage, as well as how much time is spent on each app and/or website. If you do not have a home tab, I’m afraid that this is affecting all users currently on any version of iOS 16. If you can head here and update your operating system, it should clear that up:
Update iOS on iPhone - Apple Support
All the best,
Team Opal