River keyboard provides Chinese input methods by iOS's custom keyboard extension. The extension for Chinese input methods requires full access permission. ps: Not support Bluetooth keyboard Features: 1. Similar to PC standard keyboard. 2. Unicode key-in tool 3. Built-in many popular Chinese input methods 4. Support gcin and scim table format. It is easy for River keyboard to support new input method by just copying table file via iTunes. Any comment is welcome, please mail to firstname.lastname@example.org River Keyboard requests full access to install Chinese input method table.