What is the best free music app of 2019? There are billions of music apps out there in the iOS App Store and Google Play. The actual number will take a long time to decipher, as new applications come, sometimes even too quickly to attract attention. The rise of Internet access to radio, streaming services, instrument tuner and editing device applications makes it difficult to determine what is best for who and who. No one wants to download a dozen music apps, only one that fits their needs.