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Update or uninstall Understand

Check for updates

Understand can tell you whether a newer build is available:

  1. Open Help ▸ Check for Updates.
  2. Understand compares your build against the latest published build:
    • If you are current, it reports "You are on the latest version."
    • If a newer build exists, it opens the download page in your browser so you can get it.
    • If it can't reach scitools.com, it reports that instead (check your connection or download manually from the link below).

The latest build is always available at licensing.scitools.com/download.

To see your current build number, open Help ▸ About Understand.

Install an update

Updating is just installing the newer build. Download it from licensing.scitools.com/download and install it the same way you installed the first time:

  • Windows — run the new installer; it replaces the existing installation.
  • macOS — mount the new .dmg and drag Understand onto Applications, replacing the old copy.
  • Linux — extract the new .tgz and use it in place of the old scitools/ folder (or alongside it, if you want to keep both builds available).

Full per-platform steps are in Install Understand. Your license and projects are not affected by updating; if an update changes a parser, affected projects are re-analyzed automatically — see Keep your analysis up to date.

Keep your license

Your license is stored separately from the application, so a normal update keeps you licensed. If a fresh install ever asks for a license again, see redeem a license.

Uninstall

Uninstall from Settings ▸ Apps ▸ Installed apps (or Add or Remove Programs): find Understand and choose Uninstall. This runs the installer's uninstaller and removes the program files.

Quit Understand, then drag Understand from Applications to the Trash. That removes the application bundle (which includes the bundled command-line tools).

Understand ships as a tarball with no installer, so there is nothing to run — just delete the extracted scitools/ folder. Also remove any PATH entry you added for scitools/bin/linux64.

Remove leftover settings (optional)

Uninstalling removes the program, not your per-user preferences. For a truly clean reinstall — for example when troubleshooting — also clear Understand's settings. See reset settings.

Your .und project databases are your own files wherever you created them; uninstalling does not touch them. Delete them yourself if you no longer need them.