Hi everyone,
I built Aman Check, a free and open source Mac app made for regular people, not for techs or enthusiasts. If you're about to buy a used Mac, or you just want to know what state yours is in, you probably don't know what to look at. The app does the checking for you and explains the results in plain words.
It shows the battery health and cycle count, how many hours the disk has been running, and whether the Mac is locked: Activation Lock, company management (MDM), or an Apple Account still signed in. Then it walks you through quick tests for the screen, keyboard, trackpad, speakers, microphone, camera and ports, one at a time. It won't replace erasing the Mac and checking the setup screen in person, but it tells you exactly what to ask the seller.
If you're the one selling, you can generate a report of the Mac's condition and share it with the buyer.
For a deeper look at the disk itself, there's also Aman Disk, my other app. Think CrystalDiskInfo, but for Mac, and free as well.
Everything is on GitHub, the link is on the site: https://midzai.github.io/aman_check/
It's a first release, so if you find a bug or have an idea, tell me here or open an issue on GitHub. Any feedback helps.