Just heard a startup pitch at Bamboo Detroit by the founder. One of the features alerts a deaf person to a loud noise such as a baby crying or a police siren

Just heard a startup pitch at Bamboo Detroit by the founder. One of the features alerts a deaf person to a loud noise such as a baby crying or a police siren that I thought was extremely useful. The basic app will be free and they're hard at work on an advanced app that will be paid. There are very few, if any, open source apps for the deaf.