BBB App is a mobile client for BigBlueButton services, which provides an easy way to attend and participate in BBB meetings on the go. Please note that this app is not an official product of BigBlueButton Inc.

With this application, you can join your BBB meetings from your mobile device and share your webcam and/or smartphone screen, speak or chat with other participants. The app is available for Android devices and it's free to download and use.

However, there are some limitations to the app's current version. Shared notes and breakout rooms are not available yet, and drawing on the multi-user whiteboard from your mobile device is also not possible at the moment.

Overall, BBB App is a useful tool for those who need to attend BBB meetings on the go, but it still needs some improvements to offer the full range of features available on the desktop version of the service.