Cosmos : Offline Music Player

Name: Cosmos : Offline Music Player
Rating: 4.4 (30 reviews)
Author: Raphael Boullay Le Fur

By: Raphael Boullay Le Fur

The open source alternative

Features & Capabilities

Cosmos Music Player

Completely free — no in‑app purchases, no ads, no tracking — and totally open source.

Cosmos Music Player is a high-quality music player that supports both iCloud Drive synchronization and local storage, giving users flexibility in how they manage their music. The app is built and designed for the iOS and Apple ecosystem with full CarPlay integration.

A premium audiophile music player for iOS supporting FLAC, WAV, M4A, MP3, Opus, OGG, DSD, and DSF formats with advanced features including Apple CarPlay, DSD playback (DoP & PCM conversion), dual storage options (iCloud/local), playlist management, artist information integration, graphic equalizer, and multi-language support.

Apple CarPlay Integration

Full CarPlay Support: Native CarPlay interface for safe in-car music control
Tab-Based Navigation: Quick access to All Songs, Favorites, Playlists, and Browse sections
Now Playing Interface: Full player controls with play/pause, skip, and seek functionality
Seamless Synchronization: Real-time playback state sync between phone and CarPlay
Multi-Language Support: CarPlay interface fully localized in English and French

Audio Playback

High-Quality Lossless Support: Native support for lossless FLAC and WAV audio files, plus MP3
Graphic Equalizer: Text-based GraphicEQ support for precise audio customization
Custom EQ Settings: Configure and save different GraphicEQ settings
Siri Integration: Voice control for music playback in English and French
ReplayGain Support: Automatic volume normalization for consistent listening experience
Embedded Artwork: Displays album art from FLAC, MP3, and WAV metadata
Advanced Audio Engine: Built with AVFoundation for optimal audio quality

Music Library Management

Dual Storage Support: Choose between iCloud Drive (syncs across devices) or local storage (device only)
iCloud Drive Integration: Automatic sync of music files across devices when using iCloud storage
Local File Support: Full support for music files stored locally in app's Documents folder
Smart Library Indexing: Automatic detection and indexing of music files from both storage locations
Metadata Extraction: Reads artist, album, title, and other metadata
Offline First: Works completely offline with local files, no internet required

Artist Information

Dual API Integration: Combines Discogs and Spotify APIs for comprehensive artist data
Artist Profiles: Rich artist biographies and information
High-Quality Images: Artist photos and album artwork
Alternative Sources: "Wrong artist?" feature to switch between data sources
Smart Caching: Efficient caching system for offline access

Internationalization

Multi-Language Support: English and French translations
Localized Interface: Complete UI translation system
Cultural Adaptation: Proper pluralization and date formatting
Easy Extension: Modular system for adding new languages

Supported Siri Commands

"Hey Siri, play my music on Cosmos"
"Hey Siri, play my favorites on Cosmos"
"Hey Siri, play [playlist name] on Cosmos"
"Hey Siri, play [song name] on Cosmos"

Credits

Logo Design: Created by Zerrotic (zerrotic on Discord)
App Store Screenshots: Designed by MrVedakkaN (mrvedakkan on Discord / vimalothomas on Linkdin)

User Growth & Download Statistics

App

By:

Raphael Boullay Le Fur

Rating:

4.40

(30)

Version:

1.2.2 Last updated: 2026-05-03

Version code:

885172139

Creation date:

2025-09-23

Compatible devices:

Size:

20.90MB

URLs:

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-07-01

Compare stats and ranking:

Ranking

# 246,181 ▲ 307

For Developers

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Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

Raphael Boullay Le Fur

Apple Apps Store

https://apps.apple.com/us/app/cosmos-offline-music-player/id6751984723

User Reviews

This app is what I've been waiting for, for years... I have been using VLC and other music apps that don't collect data and are preferably open source. This is it. This has THE potential to be the #1 local music player in the App Store with one of the cleanest looking user interfaces I've seen. However, there are a few glaring issues keep me from fully switching over. Keeping in mind the app's early development, here are a few positives and negatives. Positives: - Open-source 🙏 - Supports MP3, FLAC, OPUS (buggy) & WAV. - Does not collect data or use telemetry. - Very nice UI (not so good UX). - Allows users to import a custom GraphicEQ. - Importing local music is easy and allows users to import songs from different folder locations. - iCloud integration (not useful personally but a pro nonetheless). Negatives: - Adding/Appending to Queue is barely barely implemented and quite rudimentary. - OPUS files display blank metadata. - The option "Remove from library only" off by default. An unsuspecting user may unintentionally delete all of their local music files. - When importing large numbers of music files (~2,000+) the app crashes. Although this may be due to the files app itself. - Does not allow M3U/M3U8 playlist importing or exporting. - Created playlists are only available in JSON format. Note to the Lead Developer (clquwu): Overall this is a wonderful app and I have been following its development closely. I'd like to make a kind suggestion that the queue, playlists and importing be prioritized as those are the only issues preventing my full switch over. In time of course. Thank you for taking initiative and creating something like this for little to nothing in your valuable time on this earth. 🙂

by Ah*****, 2026-06-16

Great app!! I liked everything at the beginning, everything is comfortable and pleasant. But I've encountered a problem, now, when I go in, the first ten seconds everything is fine, and then everything just freezes. The app doesn't respond to touch or anything I'm very very sad. P.S. (English is not my first language, translated through a translator)

by wx*****, 2026-06-03

I love the app and the look of it. Using this app along with others to create my music library is putting me back in the days of LimeWire and ripping CD’s and I dig it. The ONLY thing I would ask for is a volume slider in app, I don’t know. Just cause 🤷🏻‍♂️ for people wanting to edit metadata, you should use Evertag, pretty simple to use and find with just a search 👀 Love the app and I appreciate it and its creators existence. Can’t wait to see if and what it develops into!