EchoirX

A sophisticated Material You music downloader for Android

Overview Echoir (from Echo + Choir) is a premium music downloader delivering high-quality audio formats while adhering to Material Design principles. The name cleverly plays on the phrase "which will fall soon," reflecting the ephemeral nature of software projects.

Key Features Audio Quality Options Hi-Res Lossless — Up to 24-bit/192kHz FLAC CD Quality Lossless — 16-bit/44.1kHz FLAC Dolby Atmos — Enhanced AC-3/AC-4 High Quality AAC — 320kbps Standard Quality — 96kbps AAC Design & User Experience Material You Theming — Dynamic colors following system preferences Material Design 3 — Modern components and animations Intuitive Interface — Simple workflow for downloading music Core Functionality Background Processing — Downloads continue with progress notifications Comprehensive Metadata — Extensive tag support for all major fields Queue Management — Organize and prioritize downloads Customization Options: Configurable download locations Flexible file naming formats Smart filtering system Smart Filtering Quality Filters: Hi-Res, Lossless, Dolby Atmos Content Filters: Explicit, Clean Embedded Metadata Echoir embeds rich metadata in every download:

Category Details Track Info Title, Track Number, Total Tracks, Disc Number, Total Discs Album Info Album Title, Release Date, Year, Copyright, Record Label, UPC/Barcode Artist Info Artist(s), Album Artist, Composer, Lyricist, Producer, Mixer, Engineer, Mastering Engineer Additional Genre, Explicit Flag, ISRC, Cover Art (1280×1280), Synced Lyrics (when available), Source URL Technical Foundation Echoir represents a complete reimagining of its predecessor (FluidAC) with significant improvements:

Optimized Codebase — Dramatically reduced APK size Enhanced Functionality — Background downloads and comprehensive metadata Open Source — Fully transparent development Minimal Dependencies — Custom-built minimal version of ffmpeg-kit Why FFmpeg? Echoir utilizes a custom-built version of ffmpeg-kit specifically for Hi-Res Lossless content processing:

Handles MPEG-DASH Segments — Hi-Res content is delivered as segmented files Stream Copy Only — Uses -c copy flag for lossless concatenation without re-encoding Format-Specific Processing — Only used for Hi-Res content; other formats download directly