Your first steps: launcher, activation, applications

Short answer: Install the Litesum Launcher, sign in once so it activates your computer, then install only the applications you want. Everything else — updates, models, licence renewal — happens through the launcher.

At launch, the three steps are:

1. Install the launcher. One installer, into your own user folder, with no administrator permission needed. See Install the Litesum Launcher.
2. Activate your computer. The launcher shows a short code. Sign in on your account page, enter the code, give the computer a name, and approve it. See Activate a computer.
3. Choose your applications. The launcher lists every Litesum application with its status; install the ones you want. Some download a model on first use. See Install applications and models.

Before launch

None of this can be done yet: the installers are not code-signed and the catalogue is not public. The download page says so, and the list on the home page hears first when that changes.

Applies to

All applications, Windows. Reviewed 18 September 2026.