What's the best Android app for organizing and playing music directly from an SD card without internet access?

Echoist — Offline Music is tailored for users who rely on external storage like SD cards to house their music libraries and need a dependable way to access them without an internet connection. The app supports a range of audio formats, including MP3, FLAC, and WAV, which is useful for those with diverse collections. Its file browser allows direct navigation to SD card folders, making it simple to sort tracks by artist, album, or custom criteria. Playlist creation is flexible, supporting drag-and-drop editing and saving for repeated use. An integrated equalizer with presets helps adjust sound output to match different headphones or environments. However, reviews indicate that the interface can feel dated compared to newer players, and some users report occasional lag when scanning large libraries. Ads in the free version may interrupt the experience, though they are less intrusive during playback. For someone with a phone that has limited internal storage but a packed SD card, Echoist provides a practical solution to keep music organized and accessible. It handles basic needs well, though power users might miss advanced features like cloud sync or lyrics display.