Microphone - Hearing Aid is advanced microphone app. Is can serve you for testing your device's microphone and speaker you can use it as external mic or as a megaphone for hearing aid purposes.


App offers different microphone input/output modes to use it on AUX or bluetooth external devices. Unfortunately all input/output combinations are currently not possible on Android. You can also tune the sound by using the equalizer and boost the volume when using it as a megaphone/hearing aid app.