> Not 100% sure, but I think the facebook App does something similar.
from the article: "A Facebook spokesperson said it also collects that data to help it tailor and target its ads. For example, the company might use it to help an app developer target ads to users that have already downloaded that developer’s other apps."
There is no explicit way on iOS to check what other apps are installed, but they can check whether an URL scheme is supported, and from that you can infer the app is installed (not guaranteed, many apps can register the same scheme). If the app doesn't register a URL scheme I don't think there is a way to detect it.
Add Twitter mobile to your home screen. For me, it's exactly the same experience. Actually it's better! I don't get notifications about who to follow or some person tweeted or retweeted something!
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[ 5.1 ms ] story [ 49.8 ms ] threadfrom the article: "A Facebook spokesperson said it also collects that data to help it tailor and target its ads. For example, the company might use it to help an app developer target ads to users that have already downloaded that developer’s other apps."
I also enable “Opt out of interest-based ads” on my Android Devices.