This application is very important for zaiwa literacture. There are two kinds of Zaiwa keyboard. They are backword and unicode.
Download:

Backword èq ká râ nghut jáng
á= {[+a
à =" '+a
â = . > eq shift +a
Unicode èq ká râ nghut jáng
á = a + {[
à =a + " '
â = a+ . > eq shift
