Termux :
Termux is an application that is used for Kali Lenux terminal in Android device. Termux is more easier to use than Net Hunter or Debian. This is for non root user. "nmap" can use here by using the terminal. By using "nmap" anybody can scan any website to find out loop holes of that targeted website to make any kind of attacks.
Please don't misuse Termux to make attacks.