Apps in this category may contain mild or occasional cartoon, fantasy or real-life violence, as well as occasional or mild adult, sexually suggestive or horrifying content and may not be suitable for children under 9 years of age.

12+

Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.

17+

You must be at least 17 years old to access this App.

Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

Microphone MegaMic Megaphone 螢幕截圖

iPhone

About Microphone MegaMic Megaphone

Note: Background noise issue can simply be solved by reducing the volume of speaker first(then iPhone).

This app allows you to use your phone as a microphone!
It also acts as a decibel monitor and helps you measure how loud a sound is.
You need to connect one end of the AUX Cable to iPhone, and the other end can be connected to a speaker, a PC, or anything that takes input via AUX(headphone port), for it to work as a mic or a voice amplifier! (Bluetooth only supports normal speakers)
It'll work as a real mic, and can be handy at parties, functions, or anytime you need a portable megaphone...
Delay option can be used to echo your voice after the set time... Announce anything! Louder!
Can also be used with an Apple TV, just airplay your phone to it!

Bluetooth supported on iOS 10 onwards! After upgrading to iOS 10, you can use it wirelessly, finally!
Voice may be delayed by less than a second(due to the nature of Bluetooth standards) but will be absolutely instant on AUX.

IMP: AUX Cable must be connected after the app is launched, but before mic switch is turned on...

Note: Reduce volume if you experience noise, or contact me at below email, I'll definitely try to help you out...

Megaphone Microphone Mic Amplifier

No Ads!

I've tried many other apps, this is the only one that works the way I'd like it to, i.e. Amplify my voice using the phone as a microphone thru speakers - Frantic Composure

Great idea to turn your phone into an external mic, it's one less device to worry about! And even better if you're caught in a situation where you need an extra mic! - DixieChickTX

And many more! Mega! Mic Phone! iPhone! PA! Public Announcement!

Note: Background noise issue can simply be solved by reducing the volume of the speaker(not iPhone, which will worsen problem) considerably(though your speech volume will be audible), and voice will be absolutely clear if you reduce speaker volume.
IMP: In rare cases, there may be high noise, to fix it, kindly lower down the volume of speaker considerably and check, contact me if required. Even in low volume, the actual vol. is quite high.