MP4 to MP3 convert your video to mp3 and save this mp3 song in your device. Also It Converts M4A to MP3 audio file.
This app also support batch files conversion, You can select multiple videos or m4a audio files to convert to mp3.

Features
-> Convert Mp4 to MP3
-> Convert M4A to Mp3
-> Batch Files Support
-> Very Simple and easy User Interface