OpenVPN Connect is the “official” app from the OpenVPN Inc. and is designed to be more user-friendly for VPN users with minimal technical expertise. It’s not as feature-rich as openvpn for Android, which is designed toward more advanced OpenVPN users.
Openvpn for Android Openvpn for Android, a free and open-source client created by Arne Schwarzbe, enables you to connect with any VPN service that supports the OpenVPN protocol. If your device isn’t compatible with the pre-configured VPN applications available on the Google Play Store, this is an excellent alternative. The setup is pretty straightforward. You’ll need to download the VPN profile files. (The config files are named.ovpn). These files can be downloaded from your provider’s website or by contacting live chat support.
Once you’ve imported your profile, just tap one of the servers in the list and connect to that server. Once connected all Internet traffic is routed through a secure tunnel and sent to the server selected by the app. The Status tab lets you view your connection details and the status. A kill switch is always enabled by default, and it will shut down your Internet connections when the VPN tunnel is cut off.
The app also provides per-app VPN and an always-on feature that automatically initiates an VPN connection whenever the app is in use and will continue to work http://openvpnandroid.com/how-to-set-up-a-vpn-for-roku/ even after your device goes to sleep or switches networks. However, the latter requires Android 7.0 or higher and will make your battery run more than usual.