FreeMp3 is a free online app that's both a free music search engine and MP3 conveter/downloader all in one nice, easy to use website. FreeMp3 has a long history of helping users find free music on YouTube and few other websites, including the actual MP3 downloader. It finds music in MP3 format and multiple other formats, which it then converts to MP3. All this happens behind the scenes, and you only need to find the video you want to download, and tap it.