EpicPhone - Amplify Your Voice app for iPhone and iPad

Epicphone turns your iPhone into a full-fledged microphone and speaker system. The app lets you choose one of the microphones in your iPhone. A user has the option to use the iPhone’s inbuilt speaker or connect to an external speaker over Bluetooth or an AUX cable.
Once connected, the speaker will play everything you say in mic a loud. So be it your loud parties or conference where you want to address all your friends without actually screaming.

Connect one end of the AUX Cable to iPhone, and the other end can be connected to a speaker, a gaming console, a PC, or anything that takes input via AUX(headphone port), for it to work as a mic or a voice amplifier!
Or Connect your iPhone with Bluetooth speaker. Just two step and get your real mic(Epicphone) ready which can be handy at parties, conference or any time when and where you need a portable Megaphone.

You can also be used with an Apple TV, just airplay your phone to it!