BluMic

BluMic is an mobile utility app that transforms your smartphone into a live, Low-latency wireless microphone. It pairs directly with any standard Bluetooth speaker or headphone set. The app takes the audio picked up by your phone's built-in microphone, applies real-time voice filters or volume boosting if desired, and streams it live to your connected speaker.
Why people need it: in Public Speaking: Teachers, coaches, and event organizers often need to address a room or a crowd but don't have access to a PA system. This app turns a standard Bluetooth party speaker into an instant megaphone. Karaoke & Entertainment: People hosting parties can use the app for a quick karaoke setup, passing the phone around as a microphone. Cost Efficiency: If you only need a microphone for a one-off event, downloading an app is much cheaper and more convenient than buying a dedicated wireless microphone and receiver.
Accessibility: For soft-spoken individuals or those who have lost their voice, the app acts as a portable vocal amplifier to help them be heard in noisy environments. By using this app with headset it acts as sound amplifier for people who cant hear small sounds.
In Conference section we can connect up to 10 users and have a conference who are connected to same WiFi, by this there is no need for passing the traditional microphone to each other.