Hear Easy app by Listen and Be Heard LLC allows you to use the Android smartphone as a personal sound amplifier with audio input from system MIC and audio output to a connected Bluetooth speaker.
The app gives you the option to record audio output to a MP3 file and then share the audio file, listen to it later, or delete it. The full featured app is offered through Google play on a 30-days free trial basis after which you have the option to purchase a monthly subscription. Listen and Be Heard LLC may from time to time offer additional promotional subscriptions to the registered users which they can purchase directly from the website.