Measure Killer Measure Killer

License keys

How license keys work, how to enter one, and what changes when you do.

Last updated · May 28, 2026

What a license key unlocks

Without a key Measure Killer runs as the free desktop edition — no time limit, free for personal and commercial use. A key unlocks the paid features for the edition tied to it (Enterprise).

EditionUnlocked with key
Measure Killer Free(no key needed)
MK EnterpriseAll features incl. tenant-wide scans, lineage, access tracking

Trial vs paid keys

Both kinds work the same way — paste them into the app, the paid features turn on. The difference is just the validity:

  • Trial key: time-limited. Expires on its own. Nothing is billed, no card on file. Request one here. To test exports during a trial, use Sample data from the welcome screen. To test Clean TMDL, run a local file in Single model and report mode (the free desktop mode).
  • Paid key: tied to your annual subscription.

Enter a key

License dialog — enter your license key and signature, or upload a license.json file

  1. Open Measure Killer and click License → Enter your license in the menu bar.
  2. The License dialog opens with two fields:
    • License key — paste your license key here.
    • Signature — paste the full signature string here. This is a long string — make sure you paste the entire thing, not just the first few characters.
  3. Click Check license to verify the key is valid.
  4. Click Save to apply it.

Alternatively, if you received a license.json file (paid customers only — trial licenses are entered manually), click Upload your license.json and select the file.

After applying a key, the title bar changes from “Measure Killer Free” to “Measure Killer Enterprise” (paid key) or “Measure Killer Trial” (trial key) and the paid features become available.

Remove a key

License menu — Enter your license, Upload your license.json, Buy a license, Remove license

To remove a license key, click License → Remove license in the menu bar. Measure Killer reverts to the free edition immediately — no restart needed.

This is useful when transferring a license to another machine, or when a trial has ended and you want to continue using the free edition.

When a key expires

  • Trial keys expire after the trial period. When the trial ends, Measure Killer reverts to the free edition automatically. All views you already generated remain visible, but paid features (exports, XMLA removal, Clean TMDL) are disabled. Your scan data is not lost — you can still browse results and save .measurekiller files.
  • Paid keys are tied to your annual subscription. If the subscription lapses, the key stops working at the end of the billing period. Renewal reactivates the same key — no re-entry needed if the key is still saved in the app.

In both cases, the free edition features continue to work without interruption.