I have long thought there should be a virtual sandbox available for apps that generates fake data to apps according to preset stories. Like, tell one app I am a

I have long thought there should be a virtual sandbox available for apps that generates fake data to apps according to preset stories. Like, tell one app I am a rich bachelor spending time in french riviera and another I am homeless in New york. Spoof gps, wifi and whatnot data that fits the pattern to the app. (I know, it would be hard)