Hmm, this must also be implemented in iOS right? Like there's no way this isn't also being used on mobile devices.

Oh, yeah there it is:

And even more recently, a forensics tool went looking on the phone: in September 2026, Alexis Brignoni taught iLEAPP to read the same store on iOS, where graph.db and the ontology.db that decodes its predicate codes sit under /private/var/mobile/Library/IntelligencePlatform; he writes it up in Reading the iPhone Knowledge Graph, and Checking Its Work.

This links to https://leapps.org/blog-post?post=apple-intelligence-platform-knowledge-graph for more information.

Your iPhone runs a daemon called knowledged. It sits in the background and does exactly what the name suggests. It builds knowledge. Not files, not logs, but a graph of things the phone has decided are true about you. Who your contacts are. Where you have been. Which apps you run and who made them. It ties all of that together and stores it on the device.

Fucks' sake. Everything is Big Brother. Makes me want to give up everything and move to a rural area in Africa or India or something, someplace away from cities and big tech corpos.

Android must be doing similar things, though for Google it's probably server-side and might not be available on the local device.