A free app for Android, by H20 Studio.

Video to MP3 Converter is a powerful application that helps you to convert videos to MP3, and save your audio recordings to your mobile phone.

Video to MP3 Converter has a user-friendly interface and supports a variety of formats. You just need to open the application and select the video you want to convert. It supports various video and audio formats as well as bitrates. This can also be used as an audio cutter.

This app is great as it also allows you to use your converted files as ringtones for your Android device. It is very simple and easy to use.