Soapbox

Latest release: v0.64.9

Debian / Ubuntu

sudo install -d -m 0755 /etc/apt/keyrings
curl -fsSL https://pkg.soapbox.pub/apt/key.asc | sudo tee /etc/apt/keyrings/soapbox.asc > /dev/null
echo "deb [signed-by=/etc/apt/keyrings/soapbox.asc] https://pkg.soapbox.pub/apt stable main" | sudo tee /etc/apt/sources.list.d/soapbox.list
sudo apt update

Then install:

sudo apt install armada-desktop

Flatpak

flatpak remote-add --if-not-exists soapbox https://pkg.soapbox.pub/flatpak/soapbox.flatpakrepo

Then install:

flatpak install soapbox buzz.armada.app

Android (F-Droid)

Open this link on the device, or add it as a repository in the F-Droid client.
https://pkg.soapbox.pub/fdroid/main/repo?fingerprint=CEA02E48815EC61244B5ECB35680B745A7A9A41A9257382F1D8BDDC14E533A17