{
  "slug": "grapheneos",
  "category": "mobile-operating-systems",
  "name": "GrapheneOS",
  "description": "A privacy and security focused mobile operating system with Android app compatibility, developed as a non-profit open source project for Google Pixel devices.",
  "website": "https://grapheneos.org",
  "source": "https://github.com/GrapheneOS",
  "license": null,
  "platforms": [],
  "jurisdiction": null,
  "pick": true,
  "pick_reason": "Hardened Android for Pixel phones with no Google services by default, sandboxed Google Play only if you choose it, and no analytics or telemetry. Open source and funded by donations.",
  "disclosure": null,
  "grade": "B",
  "score": 80,
  "coverage": 100,
  "summary": "GrapheneOS scores 80 out of 100 (grade B) on the mobile operating systems criteria. It meets 3 of 4 criteria: open source, no trackers or telemetry and no ads or data sales. It does not meet independent audit.",
  "url": "https://privacyratings.com/mobile-operating-systems/grapheneos/",
  "markdown": "https://privacyratings.com/mobile-operating-systems/grapheneos/index.md",
  "answers": {
    "open_source": {
      "title": "Open source",
      "weight": 3,
      "answer": "yes",
      "evidence": "https://grapheneos.org/faq#copyright-and-licensing",
      "note": "Released under OSI-approved licenses, inherited from upstream projects or MIT for its own projects."
    },
    "no_trackers": {
      "title": "No trackers or telemetry",
      "weight": 3,
      "answer": "yes",
      "evidence": "https://grapheneos.org/faq#default-connections",
      "note": "No analytics or telemetry. Default connections are limited to GrapheneOS update and service servers."
    },
    "no_ads": {
      "title": "No ads or data sales",
      "weight": 2,
      "answer": "yes",
      "evidence": "https://grapheneos.org/donate",
      "note": "Funded by donations to the non-profit GrapheneOS Foundation."
    },
    "independent_audit": {
      "title": "Independent audit",
      "weight": 2,
      "answer": "no",
      "evidence": null,
      "note": "No independent audit report is published. The project relies on continuous public code review."
    },
    "transparency_report": {
      "title": "Transparency report",
      "weight": 2,
      "answer": "n/a",
      "evidence": null,
      "note": "Only applies to hosted services with a website to test."
    },
    "user_notice": {
      "title": "Tells users about requests",
      "weight": 1,
      "answer": "n/a",
      "evidence": null,
      "note": "Only applies to hosted services with a website to test."
    },
    "tls": {
      "title": "TLS configuration",
      "weight": 2,
      "answer": "n/a",
      "evidence": null,
      "note": "Only applies to hosted services with a website to test."
    },
    "security_headers": {
      "title": "Security headers",
      "weight": 1,
      "answer": "n/a",
      "evidence": null,
      "note": "Only applies to hosted services with a website to test."
    },
    "web_standards": {
      "title": "Modern web standards",
      "weight": 1,
      "answer": "n/a",
      "evidence": null,
      "note": "Only applies to hosted services with a website to test."
    }
  },
  "tests": {
    "ssllabs": null,
    "observatory": null,
    "internetnl_web": null,
    "internetnl_mail": null,
    "trackers": [],
    "tested_at": "2026-10-01T10:59:36.113Z"
  },
  "last_modified": "2026-10-01T11:14:42Z"
}