Voice Message Board is a free Android app developed by OHMAE Ryosuke. It was created to assist in communication with people who are hard of hearing. The app eliminates the need for a whiteboard by allowing users to input messages through voice recognition.

The app features a simple interface that allows users to launch the voice input dialog by tapping the screen. Users can also change the font size by pinching the screen and select the color theme of their choice. The app is easy to use and provides a convenient way for people with hearing impairments to communicate effectively.

It is worth noting that Voice Message Board uses Firebase for collecting crash information. The source code of the application is available for public use under the MIT license on GitHub. Overall, Voice Message Board is a useful app that provides a means of communication for people with hearing impairments.