Keyboard Aksara Sunda is an Android application designed to type the Sundanese script. It includes a keyboard for Sundanese script (Swara, Ngalagena, Rarangken, Numbers), a Latin script keyboard (with the additional character 'é'), and a QWERTY keyboard layout (qa, wa, ra, e...). The app allows for the color of the keyboard to be customized and is compatible with Android 6.0 (Marshmallow) and AndroidLollipop) with the Sundanese script font installed.

However, users may encounter two common errors while using the app. Firstly, on Android Lollipop 5.1 and below, the Sundanese script is not supported by default, and users must install the Sundanese script font to use the app. Secondly, the Rarangken character may be misplaced due to the font system, leading to an error in typing.

Overall, Keyboard Aksara Sunda is an effective tool for typing in the Sundanese script, but users should be aware of the errors that may occur and how to troubleshoot them.