flatpak install net.biniou.LeBiniou
Then you can start Le Biniou with:
flatpak run net.biniou.LeBiniou
Beta releases are also available. To add the beta channel to your user flatpak sources, enter the following in the command line:
flatpak remote-add --user --if-not-exists flathub-beta https://flathub.org/beta-repo/flathub-beta.flatpakrepo
To then install Le Biniou preview version, enter:
flatpak install --user flathub-beta net.biniou.LeBiniou
To run it, enter:
flatpak run --branch=beta net.biniou.LeBiniou