The prompt appears to refer to the application on the Apple App Store, which has a download size of 17.8 MB . Key Features of "Locked" (17.8 MB)
The app requires and is compatible with iPhone. Locked: Less Screen Time - App Store - Apple (17.8 MB)
: Unlike many software-only screen time tools, this app can pair with a physical NFC tag to add a tangible barrier to overriding limits. The prompt appears to refer to the application