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.
cdn.branch.io
classified as tracker · 2
Independent tracker databases attribute this domain to Branch Metrics, Inc. (Branch deep-linking/attribution), associated with data such as advertising ID, vendor/device/user IDs, local IP, CPU type — per TrackHAR (CC0).
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 — tracker
branch.io is operated by Branch (Branch Metrics), a mobile deep-linking and install-attribution provider whose SDK typically transmits device/session identifiers; the 'cdn.' subdomain likely serves SDK/journey assets, so a pure asset fetch cannot be fully ruled out. Since the store label declares no collection or sharing at all, the presence of a third-party attribution SDK endpoint implies a data flow the label does not cover.
OpenAI — tracker
cdn.branch.io is associated with Branch, a mobile attribution and deep-linking service that can support cross-app tracking. The app declares no data collection or sharing, so this contact appears undisclosed.
Google Gemini — tracker
Branch.io is a mobile attribution and deep linking platform used for cross-platform user tracking and analytics. The app declares no data collection or sharing, making this third-party contact appear undisclosed.
Apps measured contacting this domain
| App | Label gap | Donations | Contacts | Seen |
|---|---|---|---|---|
com.bestbuy.buyphone | not in label | 4 | 16 | 2026-07-28 → 2026-07-29 |
com.Payoneer.PayoneerDevAdHoc | — | 4 | 4 | 2026-07-28 → 2026-07-29 |
com.vanguard.app | — | 3 | 3 | 2026-07-30 |
The corpus grows one report at a time: donate your App Privacy Report — anonymous by design.
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