Specific to iOS - control of downloaded (3rd party) apps.
With the Apple devices, we can only schedule Downloaded apps as a group - that is why you will see the list of apps in grey in the Safe Center. This is a result of iOS software design.
Some of them are in color - we are working now with Apple and these apps in the near future will be individually set to be always available, blocked or subject to schedules (default).
So with Schedules on iOS, you can schedule pauses of everything like "School" and "Bedtime" but the flexibility for blocking individual apps that you have downloaded from the App Store is not there like we have on Android.
Related to this is our device Screen Time limiting which is a popular feature that we have for iPhones and iPads (for example, two hours of iPad per day max during allowed periods)