Smart Gain is a useful audio app that normalizes an audio file’s volume level and can also amplify a quiet track or a fragment of it. It ensures your audio files have the same volume level throughout. You need not convert anything and shall retain the audio files’ original quality. Smart Gain chooses the ideal volume level for every file automatically. The manual adjustment feature helps amplify voice recordings to a specific level. The amplification changes done reflect immediately in file waveform, helping you attain the ideal result effortlessly.