Installation

Locus is free. You can install it on macOS or Windows, or use it in the browser without installing anything. All versions are available on the download page.

System requirements

Platform	Requirements
macOS	macOS 10.13 High Sierra or later. Apple silicon and Intel Macs.
Windows	Windows 10 or 11, 64-bit.
Browser	A current version of Chrome, Edge, Firefox or Safari.

macOS

1. Download Locus-macos.zip from the download page.
2. Open the zip file. Your Mac extracts Locus.app into the same folder.
3. Drag Locus.app into your Applications folder.
4. Open Locus from Applications, Launchpad or Spotlight.

The app is signed and notarized by Apple, so macOS opens it without extra steps. The first time, macOS asks you to confirm that you want to open an app downloaded from the internet. Click Open.

Windows

1. Download Locus-windows-setup.exe from the download page.
2. Run the installer and follow the steps.
3. Open Locus from the Start menu.

Locus installs for the current user only, so you do not need administrator rights.

If Windows shows a “Windows protected your PC” warning, click More info, then Run anyway. See Windows SmartScreen for why this happens.

Locus uses Microsoft Edge WebView2, which is included in Windows 10 and 11. If it is missing, the installer downloads it, which requires an internet connection.

Web app

Open web.locusmath.app in your browser. Nothing needs to be installed.

Updates

The desktop apps check for a new version when they start. When one is available, Locus asks whether to install it and restarts afterwards. You do not need to download the installer again.

Uninstalling

macOS: quit Locus and move Locus.app from Applications to the Trash. To also remove your settings, delete the folder ~/Library/Application Support/xyz.lunalna.locus.

Windows: open Settings > Apps > Installed apps, find Locus, and click Uninstall. The uninstaller can also delete your settings.

Uninstalling does not delete constructions you saved yourself.