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.
auth.grammarly.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 medium — undisclosed split: anthropic=false, openai=true, gemini=false. A human reviewed this domain's claims before anything here published.
Anthropic Claude — first-party
auth.grammarly.com is on the app vendor's own domain (Grammarly, matching bundle id com.grammarly.keyboard) and the subdomain name suggests a first-party account authentication endpoint rather than a third-party tracker. The provided label fields are blank rather than an affirmative 'Data Not Collected' declaration, so I cannot tell whether this flow is uncovered; a human should confirm the actual store label, since a first-party sign-in endpoint would normally imply collection of account identifiers.
OpenAI — first-party
auth.grammarly.com appears to be Grammarly's own authentication subdomain, used for account sign-in or session management. The app declares no data collection or sharing, so this authentication contact appears not covered by the label.
Google Gemini — first-party
The domain auth.grammarly.com is a first-party authentication endpoint owned by Grammarly, matching the app's bundle ID. Standard first-party operational traffic for authentication does not inherently imply undisclosed tracking or data collection.
Apps measured contacting this domain
| App | Label gap | Donations | Contacts | Seen |
|---|---|---|---|---|
com.grammarly.keyboard | — | 7 | 78 | 2026-07-28 → 2026-07-30 |
The corpus grows one report at a time: donate your App Privacy Report — anonymous by design.
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