There's a wide range of ages when it comes to the Roblox generation and I speak from experience as a librarian having to shush both kids and teens for being too loud on the computers while playing.
You can get certain Google Play apps on your iPhone, and use them to download movies and TV shows, music, and books. You can't download Android apps.
You can't run iPhone apps on a Mac computer without an emulator, though that will change with a new set of Macs, coming out by the end of 2020.
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