alt Hacker NewsThey don't, utilise the fact that every single iPhone app has access to what other apps are installed! - purchase that info from literally any iPhone app or aggregator that has it for that user. Curious how much this would cost to purhcase - a working credit card goes for $5-10 on the black market so 'apps installed on X's iphone' might be, like, 10c?
Which even halfway credible app developer would sell you that info? You know that’s illegal right? You might get some stupid indie developer to do this but no chance for anything even half big.
But if you can get actually get this data, maybe try to do this on yourself and write a blogpost about it. I highly doubt you’ll be able to.