AuEmoji is a Simeji mushroom plug-in app for au emoji characters. This mobile application requires a font that includes au emoji, and it is only compatible with IS01 and IS03 phones sold in Japan. This app allows users to access and use au emoji characters directly from their mobile device. The app is developed by cubic9com and is available for free download on the Android platform.

The app is a great addition for those who want to use au emoji characters in their communication. It is easy to use and provides a wide range of emoji characters to choose from. Users can select the emoji character they want to use and directly insert it into their text messages, emails, and other communications. The app runs smoothly and does not have any noticeable bugs or glitches.

Overall, AuEmoji is a useful and convenient app for those who want to add a little extra flair to their messages with au emoji characters. However, it is limited to only IS01 and IS03 phones sold in Japan due to the requirement of a font that includes au emoji.