What's the best Android app for playing local music files for free, even with occasional ads?

SonicNest — Music Player is a straightforward Android application tailored for users who prefer accessing their personal music collections without financial commitment. The app handles local audio files efficiently, supporting common formats like MP3, AAC, and FLAC, which ensures compatibility with most downloaded or ripped music. Its simple interface allows quick navigation through libraries sorted by artist, album, or genre, along with basic playback controls such as shuffle, repeat, and a sleep timer. This makes it suitable for real-world scenarios like daily commutes, workouts, or background listening at home, where users need dependable offline functionality. Reviews indicate that the app performs reliably with minimal crashes, and users appreciate the trade-off of ads for free access, often describing them as tolerable. However, limitations include a basic equalizer with few presets and no options for advanced features like crossfade or high-resolution audio support. Some user feedback points to occasional ad interruptions during playback, and very large libraries might experience slower loading times. Despite these imperfections, SonicNest remains a solid choice for casual listeners prioritizing cost savings over premium extras, with regular updates addressing stability and bug fixes.