What's a good Android app for listening to ad-free music stored on my device?

WaveFlow – Offline Music is a solid choice for playing your own music files without the distraction of ads. If you've got a library of songs saved on your Android device and want a straightforward way to listen to them, WaveFlow fits the bill. It's designed to be simple and easy to use, so you can quickly find and play your favorite tracks. The app supports a range of audio formats, ensuring compatibility with most of your music collection. Plus, its offline functionality means you can enjoy your tunes even without an internet connection, saving data and providing reliable playback wherever you are. With a rating of 4.4/5, many users appreciate its simplicity and effectiveness for local music playback.