Leet (or "1337"), also known as eleet or leetspeak, is an alternative alphabet for many languages that is used primarily on the Internet.
This app provides a keyboard extension which automatically converts your keyboard input into its leet codes.
eleet Keyboard supports leet dialects with different code complexities. With the settings app you will be able to customize the keyboard appearance and to select the code complexity and variation.
Use the eleet keyboard to generate cool nicknames for online games, to chat with your friends or even to generate highly secure passwords by variating your leet codes.