The cost of a legitimate KSWEB PRO license is negligible compared to the value it provides. You get a portable, powerful development environment in your pocket, regular security updates, and peace of mind knowing your phone is not part of a botnet.
However, a quick search for the phrase "KSWEB free license key" reveals a dark underbelly of the Android development community. Thousands of users are looking for a way to unlock the PRO version without paying the modest fee. ksweb free license key
If you truly cannot afford the license, use the free version of KSWEB or switch to the open-source Termux stack. There are ethical ways to build web applications on Android without stealing. The cost of a legitimate KSWEB PRO license