Chaozhuyin is a Chinese phonetic symbol Input Method (Bopomofo IME). It is very easy to use with zero learning curve.

Features:
? To input a Chinese phrase you only need to input the first phonetic symbol of each word and you can add any remain symbols arbitrarily to narrow down the candidates you may want.
? Provide several kinds of skins and colors of the soft keyboard. Keyboard and font size can be adjusted freely.
? Proximity correction: it'll smartly guess what word or phrase you want to input from neighbor keys.
? Swiping keyboard.
? English input method.
? Keyboard fan-shaped selector.
? Candidate selection dropdown.
? "Smart proximity correction" feature.
? You can remove your user phrase now.
? Eten keyboard layout.
? Up/down/left/right arrow keys and voice recognition button.
? Move the system phrase database file to and from SD card.
? Backup/restore user phrase by yourself.
? With great functionality of word or phrase guessing.
? Support mobile and tablet devices support hard keyboard.
? Able to import Chinese names in your contacts.
? Able to output Simplified Chinese.
? Support Android 4+.

This version can be used for free for 28 days with full functions. During the trial period there will be a banner ads at the bottom of the setting screen. After the trial period the following functions will be closed:
? Swiping keyboard.
? Keyboard fan-shaped selector.
? Candidate selection dropdown.
? Word or phrase guessing.
? "Smart proximity correction" feature.
? English input method.
? Up/down/left/right arrow keys.
? Voice recognition button.
? Import Chinese names in your contacts.
? Move the system phrase database file to and from SD card.
? Backup/restore user phrase by yourself.
? Remove your user phrase.