Snapchat

Broad collection for advertising — device fingerprinting, content analysis, and advertiser enrichment — but chats are ephemeral by default and precise location requires explicit permission.

Private messages are not shared with ad partners — a meaningful commitment — but device data, usage, and content go to a wide ecosystem of service providers, ad partners, and integrated third parties.

Delete-by-default for messages is a genuine architectural commitment, and the no-private-comms-for-ads pledge is explicit — but overall data retention is vague and My AI conversations feed model training.