This app is an Open SSTP Client, which is a VPN client for Secure Socket Tunneling Protocol.

With this app, you can make an encrypted connection between your mobile device and the VPN server. It can help you to bypass blocks and restrictions on some websites.

There are some advantages to using this app. For one, you can use it for free. It's not only a VPN client, it also has a lot of utilities. With it, you can access your favorite websites and services. You can also browse the Internet safely and anonymously.

Moreover, you can also make a secure connection between your mobile device and the VPN server.