KPNTunnel Ultimate (Official) is a free VPN tool for Android developed by Choliezt Zuliz. The app is designed to provide a secure and reliable connection for users while they are browsing the internet. It offers a range of features including customizable HTTP requests, direct mode, auto data reconnect, socket buffer size tweaks, multi-login, data compression, UDPGW support, customizable DNS server, and more.

One of the most notable features of the app is the ability to allow or disallow apps to be intercepted by VPN service or Iptables mode. This gives users greater control over their internet privacy and security. Additionally, the app has a root feature that allows users to use Iptables mode if they are not using VPN service and to force interception by VPN service when using WiFi tether/hotspot.

It is important to note that some features of the app may be unstable, such as multi-SSH server on some devices which may cause memory leak issues. For users who need help using the app, there is a simple guide available on the menu in the About tab or on unofficial websites and videos. Overall, KPNTunnel Ultimate (Official) is a comprehensive VPN tool that provides users with a secure and reliable internet connection on their Android devices.