This page aggregates measured, corroborated evidence: donors' iPhones recorded apps contacting this domain, every claim below was reported by separate accepted donations and published under a human verdict (later rows for an approved app inherit its verdict). A contact is a measurement, not an accusation — it does not show what data was sent.
mobilecontent.costco.com
classified as first-party · 2
What our research panel found AI-drafted · human-reviewed
We ask several independent AI models the same question and publish their answers separately — cross-vendor agreement is evidence against fabrication, and disagreement is worth seeing. 3 of 3 models answered, overall confidence high. A human reviewed this domain's claims before anything here published.
Anthropic Claude — first-party
mobilecontent.costco.com is a subdomain of costco.com, the app publisher's own domain, and the name suggests it serves mobile app content; this is first-party infrastructure (possibly fronted by a CDN, which I cannot determine from the data given). A first-party content endpoint is expected for this app and does not imply a data flow beyond the declared app-interaction and performance collection.
OpenAI — first-party
The domain is a Costco subdomain and most likely serves first-party mobile content. The provided privacy label already declares collection of app interactions and related app-performance data, so this contact alone does not demonstrate an undisclosed flow.
Google Gemini — first-party
The domain mobilecontent.costco.com is a first-party subdomain belonging to Costco Wholesale, used to deliver content directly to the app. As a first-party functional endpoint, this network contact does not represent undisclosed tracking or third-party data sharing.
Apps measured contacting this domain
| App | Label gap | Donations | Contacts | Seen |
|---|---|---|---|---|
| Costco Wholesale | — | 4 | 4 | 2026-07-28 → 2026-07-29 |
The corpus grows one report at a time: donate your App Privacy Report — anonymous by design.
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