Why is the daily app limit already used up when I just added it now?

App daily timers get reset at midnight on a daily basis. If an app gets an app limit added to it after the app was already used by your child that day, we will grab the usage for that day as part of the app limit allowance. 

Example: 

1. YouTube was used for 15 minutes in the morning without any app time limit.
2. Parent set YouTube with a 20 minute app daily limit.
3. The effective time left for YouTube is 5 minutes.
4. The app time limit tomorrow and all subsequent days will be 20 minutes.