The NordVPN app is now available. You can find it in the CSG store in Aptoide on your device.
I have been testing it for the last few days and it is working good and is much easier to setup and use than running NordVPN through the openvpn app.
They have also added more servers, including more VPN-TOR combo servers and Double VPNs.
*** The latest batch of Libertas Tablets have the app installed already ***