No specific info about version 2.1. Please visit the main page of Hear Boost on Mac Informer.
Apply audio effects to your voice and improve the quality of your recordings.
This program lets you record audio content from microphone, line-in, etc.
eXtra Voice Recorder is a very useful audio recording tool.
Boost the sound volume of files, apps or the whole system.
Is a smart tool that helps you hear all around voices.