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Open Caliper
Double-click to launch. One window, one button — nothing to figure out.
Buying or selling a used computer? Caliper reads the machine's own evidence and gives you the most accurate picture of its real condition — in about 30 seconds. Health, authenticity and history, in plain English, so you decide with certainty.
Two clear read-outs — how healthy it is, and whether it's really what the seller claims — plus every part at a glance. And when a fact can't be proven, Caliper says so, right on the page.
Download & try it →A used machine tells the truth about itself.
Caliper reads it — and won't pretend to know what it can't.
No commands, no know-how. Caliper opens one window with one button. Click it, and about 30 seconds later a clear report opens in your browser — automatically.
Double-click to launch. One window, one button — nothing to figure out.
It checks the machine and asks permission to look a little deeper. About 30 seconds.
A clear picture opens in your browser: healthy or not, honest or not — in plain English.
Don't get burned. See the device's real condition and catch inflated claims before you pay — then walk away, or negotiate with the facts in hand.
Sell faster, for more. Hand buyers an honest, verifiable report that backs up your listing — trust is what closes a used-gear deal.
Add trust at scale. A consistent, tamper-evident report on every unit — your “inspected & verified” badge, on autopilot.
Caliper answers them from the device's own records — not the seller's word.
The only check that admits
what it can't prove.
Most “health checks” flash green even when they never measured. Caliper won't — a fact it can't verify is marked, clearly. And every report is sealed with a tamper-proof fingerprint, so a buyer or seller can confirm it wasn't edited. Trust, in a single file you can share.
Download once, run it on any laptop, PC or Mac. Free and open source — no account, no catch.
Windows · macOS · Linux · verify the download: 62936380f6dca2512ee76dbcf9cbb68484ba8b3ff0ef5941d1608aaa94f78ac4