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nomilktoday at 8:46 AM1 replyview on HN

But a single app can request to know the presence of up to 50 apps, right?

And a data broker/aggregator can purchase such data from many (e.g. thousands) of apps and aggregate it, then sell it.


Replies

isodevtoday at 9:05 AM

Yes indeed, the limit is 50 which is of course enough to fully profile "regular people" who only have a handful of apps. Also don't forget, Meta/Google/TikTok/WhateverPalantir are updated weekly which means they can tweak their LSApplicationQueriesSchemes list and cover even more apps if they want to.