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.
trace.app-performance.music.amazon.dev
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 — classification split: anthropic=first-party, openai=analytics, gemini=first-party. A human reviewed this domain's claims before anything here published.
Anthropic Claude — first-party
The hostname sits under amazon.dev with an app-specific label (music.amazon), so it most plausibly is Amazon's own first-party performance-tracing/telemetry endpoint for Amazon Music rather than a third-party service, though I cannot verify ownership of this exact subdomain from the data given. Performance/diagnostic telemetry is already covered by the app's declared collection of crash logs, diagnostics, and other app performance data, so nothing here implies an undeclared data flow.
OpenAI — analytics
The subdomain name "trace.app-performance.music.amazon.dev" suggests app-performance tracing or diagnostics/analytics for Amazon Music. The app declares collecting crash logs, diagnostics, other app performance data, device IDs, and app interactions, so this contact is covered by the label.
Google Gemini — first-party
The domain belongs to Amazon and is used for internal application performance tracing and telemetry. This functionality aligns with the app's declared collection of diagnostics and performance data.
Apps measured contacting this domain
| App | Label gap | Donations | Contacts | Seen |
|---|---|---|---|---|
| Amazon Music: Songs & Podcasts | — | 3 | 6 | 2026-07-29 |
The corpus grows one report at a time: donate your App Privacy Report — anonymous by design.
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