Book Demo

1. Prerequisites

You need flatpak installed:

# Fedora (preinstalled on Workstation)
sudo dnf install flatpak

# Ubuntu / Debian
sudo apt install flatpak

# Arch
sudo pacman -S flatpak

Then log out/in once (first-time Flatpak setup). No other setup is needed — the VICUS installer automatically pulls its KDE runtime from Flathub.

2. Install VICUS

One command (recommended):

flatpak install --user https://flatpak.vicus-software.com/com.vicus_software.VICUS.flatpakref

This adds the signed VICUS repository, verifies its GPG signature, and installs VICUS together with the required KDE runtime. The first install downloads a larger runtime (~hundreds of MB) — subsequent updates are incremental.

Alternatively (add the repository manually):

flatpak remote-add --user --if-not-exists vicus \
  https://flatpak.vicus-software.com/com.vicus_software.VICUS.flatpakrepo
flatpak install --user vicus com.vicus_software.VICUS

3. Run

flatpak run com.vicus_software.VICUS

VICUS also appears in your application menu after installation.

4. Update

flatpak update com.vicus_software.VICUS

(GNOME Software / KDE Discover also offer updates automatically.)

5. Uninstall

flatpak uninstall --user com.vicus_software.VICUS