Bluetooth Loudspeaker is a utility app designed for iPhone users who want to amplify their voice output through a wireless connected Bluetooth speaker. With this app, your iPhone acts as a microphone, and the Bluetooth speaker serves as a remote loudspeaker within a 10-meter range. Users can run the app in the background, allowing them to play MP3 music and engage in karaoke simultaneously.

This versatile app caters to a wide range of scenarios, including singing karaoke, teaching in classrooms, live performances, conference speeches, sales promotions, tour guiding, sports events, outdoor activities, and more. It can also function as a volume booster or megaphone for speeches, making it a handy tool for various occasions.