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.
www.kayak.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
www.kayak.com matches the app's own brand and bundle identifier (com.kayak.travel), so it is almost certainly the app's own first-party backend serving its core booking/search functionality. The extensive collection categories the app declares (search history, account details, payment info, device IDs) cover the data flows expected on a first-party endpoint, so nothing here appears undisclosed.
OpenAI — first-party
The contacted domain matches the KAYAK app's service domain and most likely supports first-party app functionality. The privacy label declares broad collection and sharing categories, so this contact alone does not imply an undisclosed data flow.
Google Gemini — first-party
The domain www.kayak.com belongs directly to KAYAK, the publisher of the app, making this first-party network traffic.
Apps measured contacting this domain
| App | Label gap | Donations | Contacts | Seen |
|---|---|---|---|---|
| KAYAK: Flights, Hotels & Cars | — | 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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