MonsterMusic

MonsterMusic is an open-source, private, and customizable local music player for Android.


Key Features:


• Native C DSP Audio Engine: Ultra-low latency audio processing powered by high-performance native C.
• Dual Filter Architectures: Choose between high-precision Biquad IIR filters and 2048-tap linear-phase FFT FIR filters with master stereo-linked soft limiting.
• Studio Audio Effects: Stereo Delay with ping-pong feedback, Reverb, Chorus, Flanger, Polyphony, and Stereo Widening (Spatial Virtualizer), each with dedicated Dry/Wet mix controls.
• Audio Signal Chain Inspector: View real-time audio pipeline details below the cover art (file decoder, sample rate resampler, DSP filter mode, and audio sink).
• Frequency-Reactive Visualizers: Dynamic Matrix Digital Rain and 32-band Audio Spectrum visualizers with frequency reactivity, fullscreen mode, and landscape orientation lock.
• Pitch & Speed Controls: Dual coarse (0.1x) and fine-tuning (0.01x) sliders for tempo and pitch stretching.
• Interactive Synced Lyrics: Smooth auto-scrolling, drag-to-seek timestamp navigation, and tap-to-lookup dictionary popup with multi-dictionary support.
• Video Playback Support: Dedicated Video tab for local video files with battery-saving audio-only background playback and full DSP audio effects. (Disabled by default for privacy; can be enabled in Settings, which requests Android 13+ READ_MEDIA_VIDEO permission strictly to scan and play your local video files).
• Privacy First & 100% Offline: Operates completely without network requests, no analytics, no ads, and no unnecessary permissions.

More features and customizations are waiting for your discovery!