> when the application is downloaded and launched
So it looks like the law only requires it on first launch. Which makes sense if the application can only be run from that one account. Apps that can be launched from multiple accounts are not singled out in the law, but the spirt of the law would have you checking what account is launching the app and are they in the correct age range.
> (c) “Application” means a software application that may be run or directed by a user on a computer, a mobile device, or any other general purpose computing device that can access a covered application store or download an application.
If your device can connect to a covered application store, every application on your computer must follow this.