NT Injector is a free VPN client for Android that operates through a SSH server. It offers different modes such as SSH/PROXY, SSL/TLS, DIRECT, and SLOWDNS, allowing users to choose the one that best suits their needs. It also features an online/offline update and an auto-reconnection function.

NT Injector is user-friendly and easy to install. The app interface is simple and straightforward, making it easy for users to navigate. The app also provides a Telegram channel for users to get support and updates.

Overall, NT Injector is a useful VPN client for Android users who want to secure their internet connection and access blocked websites. However, it is important to note that the app may not work in certain countries due to internet restrictions.