There are plenty of sound meters in the market for iPhone and Android smartphones that tell a user how loud the surrounding noise is. Many of these apps are free. However, rather than recording the loudness of the surrounding environment, there is now a new phone app called Safe and Sound (only for Android phones) that measures the decibel level of the sound emitted from headphones and gives the user a clear indication of how loud their music really is. Furthermore, it also records the u…