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.