Verify your Mac. Share the report.
Download the macOS app, run a free Basic report in under a minute, and share a tamper-proof URL you can drop into any listing. No account.
Drag the .dmg from macfax.com to Applications, then right-click Macfax and choose Open. macOS confirms the launch once; subsequent runs open normally.
The app runs identity, authenticity, and spec-match checks in under a minute. Publish the free Basic report, or upgrade to Premium for hardware-health diagnostics and buyer re-verification.
Drop it into your listing, send it in a DM, or paste it anywhere. Buyers see the proof before they ask. Basic upgrades to Premium later without changing the URL.
Local. Read-only. No telemetry.
The Macfax app runs locally on the Mac you're selling. It reads system_profiler, ioreg, and SMART data; it does not modify your system, request privacy permissions you haven't already granted, or upload anything beyond the signed payload at publish time.
- Reads device identifiers (model, serial, chassis serial, logic-board serial)
- Reads system_profiler output (always); SMART data and battery cycle count on Premium
- Runs sustained CPU and GPU stress (Premium only) to surface thermal/throttling issues
- Runs a memory test on idle RAM (Premium only)
- Stores a per-device key fingerprint in the macOS Keychain
- Uploads nothing during the in-app preview. The signed payload only goes out at publish time.
Apple Silicon Macs only, for now.
Macfax requires an Apple Silicon Mac running macOS 14 or later. Intel Macs lack the Secure Enclave primitives the diagnostic relies on.
Ready when you are.
Free Basic report in under a minute. Optional Premium upgrade. $49, money-back guarantee.