Android app by GrapheneOS that uses hardware-backed attestation to verify the integrity and authenticity of a supported device and its operating system, confirming it has not been tampered with.
Auditor
Official website attestation.app
Our take
Auditor does something most security tools cannot: it gives you a cryptographic proof, not just a software assertion, that a device is running the OS it claims to run. Using Android’s hardware-backed keystore and verified boot chain, it lets one Android device audit another over QR codes, or run scheduled remote checks with email alerts. The catch is narrow hardware support - it works best with Pixel devices running GrapheneOS or stock Android, and the value only lands if you understand what attestation failure actually means. For GrapheneOS users, it is a natural companion that rounds out the trust model.
GitHub at a glance
GrapheneOS/Auditor
Stars
666
+ 0 this week
Last commit
16d ago
healthy
License
MIT
Latest release
92
21d ago
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Auditor alternatives
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Auditor license, in plain English
MIT Permissive
Do almost anything: use, change, and ship it, even inside closed-source products. The only condition is keeping the copyright notice.
Permits
- Commercial use
- Modification
- Distribution
- Private use
Requires
- License and copyright notice
Does not provide
- Liability cover
- Warranty
Why it matters: Permissive licensing lets anyone reuse this, including inside closed products. That is freedom to build on, but no guarantee that downstream copies stay open.
Plain-language summary of the project's license, not legal advice. Read the full text for the exact terms.