Shared countdowns for apps that belong together
If YouTube and a social feed are part of the same scrolling habit, place them in one timer. Five minutes in one app plus five minutes in the other consume ten minutes from that shared limit.
This keeps the timer attached to the behavior instead of a single package name. Switching between apps does not magically reset the boundary.
Separate timers when the limits should be different
Not every app needs the same rule. Create another timer for a different app group and choose its own interval. You can give timers simple names such as Social, Videos or News so the setup remains understandable.
Each timer keeps its own remaining time. When you move to an app assigned to another timer, Come To shows the relevant timer rather than mixing the budgets.
Only count the apps you selected
Leaving a selected app pauses its active-use countdown. Time spent on your home screen, in an unrelated app or with the phone locked is not supposed to consume the selected timer.
This makes the timer more meaningful than a stopwatch you have to remember to start and stop manually.