BeerBro6/spectraflow

Technical topics

# android-music-player # flac-downloader # flutter # hi-res-audio # lossless-audio # lyrics-sync # music-player # offline-music-player # open-source # audio-archiver # audio-dsp # audiophile # bit-perfect # material-3

Dependencies used

Dependency list 19 items

flutter{"sdk":"flutter"}
cupertino_icons^1.0.8
just_audio{"path":"packages/just_audio"}
audio_service^0.18.19
audio_session^0.2.4
youtube_explode_dart^3.1.0
http^1.6.0
path_provider^2.1.6
intl^0.20.3
glassmorphism^3.0.0
google_fonts^8.2.1
file_picker^13.1.0
share_plus^13.3.0
web^1.1.1
permission_handler11.3.1
just_audio_background{"path":"packages/just_audio_background"}
palette_generator^0.3.3+7
flutter_testDevelopment{"sdk":"flutter"}
flutter_lintsDevelopment^6.0.0

App categories

Music

Original README

English project snapshot. Visit GitHub for the latest content.

Expand / collapse project README

SpectraFlow 🌈⚡

The Ultimate Open-Source Offline Music Archiver & Hi-Fi FLAC Player for Android & Desktop.

License: GPL v3 Flutter Audio: Hi-Res FLAC Lyrics: Synced LRCLIB Live Demo Latest Release Buy Me A Coffee

⚠️ Disclaimer

Educational & Personal Use: This project is developed strictly for educational and personal use.

Content Ownership: SpectraFlow does not host, store, archive, or own any copyrighted media content. It streams, caches, and resolves audio strictly from user-provided endpoints and connected platforms.

Terms of Service Compliance: End users bear full responsibility for complying with the terms of service, policies, and regulations of any platform or service they interface with through this application.

Non-Affiliation: This project is independent and is not affiliated with, endorsed by, authorized by, or sponsored by any third-party streaming platform or corporate service.

💎 Features at a Glance

Multi-Format Extraction: Download music in true Lossless FLAC, OPUS (high efficiency), MP3 (320kbps), or M4A.
Smart Deduplication: Intelligently cleans artist names, removes duplicate tracks, and prevents redundant downloads.
Synchronized Karaoke Lyrics: Real-time scrolling lyrics powered by the LRCLIB API with automatic timing alignment.
Hi-Fi Playback Engine: Studio-grade playback powered by just_audio with seamless background playback and lock-screen controls.
Glassmorphic Material 3 Design: Built around the Prism Soundwave aesthetic featuring dynamic color shifting, neon waveforms, and frosted acrylic card overlays.
Open Storage: Saves music directly to your public /Music/SpectraFlow/ directory and triggers automatic Android media indexer refresh.
Privacy First & Zero Ads: 100% Free and Open Source. No trackers, no bloatware, no telemetry.

🚀 Getting Started

Prerequisites

Flutter SDK (>= 3.13.0)
Android SDK (API Level 21+)

📱 Direct Download (Android APK)

Pre-built installable APK files are available in Releases.

Build from Source

# Clone the repository
git clone https://github.com/BeerBro6/spectraflow.git

# Enter project directory
cd spectraflow

# Get packages
flutter pub get

# Run on connected device or emulator
flutter run

💖 Support the Project

If you love SpectraFlow and want to support ongoing development, lossless sound research, and project maintenance, consider buying me a coffee!

Buy Me A Coffee

📜 License

Distributed under the GNU General Public License v3.0. See LICENSE for more information.

Anmol ↗