The Audio Converter app is a free Android app for converting through music file formats. You can use this app to search files in root, search the music app, output Mp3, Wav, Wma, Ogg, Acc, Ac, Flac, M4a, Mka, Aiff, Opus and Ra, set bitrate, set sample rate, convert, merge and cut. You can also set output folder, filename suffix and overwrite filename from the settings. After that you can empty output menu, open output menu and convert, merge and cut online. This is the most complex audio converter app for Android that actually works and is also compatible with most up-to-date Android OS-es (4.0 and up). You can have bitrates from 32k up to 320k for professional use. This app works well from the ground up and is compatible with most screen sizes, but not with outdated sized phones. The Audio Converter app is a really useful app to have installed on your phone, because you will never have to worry again about your file format not being compatible with the programs you are using. The Audio Converter app does not take up much of your phone's memory.