This new plugin was made to simplify the distribution and the installation of new software updates or patches for all the "Vik" Extensions.
Make sure the main Vik component you are using is updated to its latest version.
The plugin Vik Updater can be installed as a standard Joomla extension by uploading its installation package file. Do not forget to enable the plugin after the installation, if necessary (from the Extensions Manager page).
Joomla 4 is fully supported, just like any previous J3.x version.