MacCheck

Summary

Buying a used Mac is mostly guesswork. Battery cycle count, SSD health, whether the machine is still enrolled in someone else’s MDM, and whether Activation Lock is on. Those decide what it is worth, and the information is scattered across tools most buyers do not have.

MacCheck runs the checks in one pass and prints a verdict.

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What it checks

System information and OS build. Battery health with cycle count, condition and capacity. SSD health through SMART and APFS. Memory pressure and swap. Thermal behaviour under a light CPU load. Recent kernel panics and abnormal shutdowns. Touch ID and the lid sensor. The security state, which means MDM enrolment, DEP and Activation Lock.

It also flags parts that may not be original.

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The parts a script cannot read

Dead pixels, a failing camera, a sticky trackpad. MacCheck prompts for those instead of pretending to detect them. It opens a fullscreen HTML tester for dead pixels and display uniformity, and walks through the camera, microphone, speakers, keyboard and trackpad one at a time.

At the end it prints a score from 0 to 100 with a risk category, and writes a JSON report and a plain text one, both with timestamps and serial numbers.

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Who it is for

Technicians and refurbishers checking machines during a COD deal, and anyone buying a used Mac who would rather not take the seller’s word for it. Built for Apple Silicon, M1 through M4, on macOS Ventura, Sonoma and Sequoia.

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What I would change

The score is a heuristic, not a verdict. It makes a technician faster. Treating the number as the decision would defeat the point of having it.

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Source

The code is public: https://github.com/rasyidev/mac-inspection-toolkit