"allowance applies to all apps"
I would like to allow my child x number of hours to use the mobile phone device per day. I thought by checking both "app daily time allowance" and "allowance applies to all apps" and setting the weekday allowance limit to x:00 hours, I could accomplish that, however she has definitely surpassed the limit today.
"Apply to all apps" is a bit misleading in my view. It actually means "apply to all apps that you selected for daily allowance". You still need to select the apps that you want to be under the daily allowance constraint. For example, if you want to allow Youtube and Facebook app total for 1 hour, you would select both Youtube app and Facebook app, and then set 1 hour allowance and enable apply to all.
In your case, if you want to block all apps, I guess that you need to select all apps. Hope it helps.