# Cosmos : Offline Music Player — The open source alternative

> Open source, free, offline music player with iCloud/local storage and audiophile features. (iPhone/iPad app by Raphael Boullay Le Fur.)

- Source: https://appshunter.io/ios/app/cosmos-offline-music-player/id6751984723 (this page in markdown: same URL + `.md`)
- Developer: [Raphael Boullay Le Fur](https://appshunter.io/developer/1837774554)
- Category: Music
- Price: Free
- Rating: 4.50/5 from 36 App Store ratings · 41 written reviews indexed
- Age rating: 4+
- Requires: iOS 18.5 · 23 MB
- Languages: American English, French (France), Russian, Chinese (Simplified, China)
- Released: 2025-09-23
- Data updated: 2026-09-09
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/cosmos-offline-music-player/id6751984723/reviews.md

## What is Cosmos?

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, WAV, M4A, MP3, Opus, OGG, DSD, and DSF.
- Graphic & Parametric EQ: full custom parametric equalizer plus GraphicEQ text-format import.
- Siri Integration: Voice control for music playback in English and French
- Home screen widgets: Now Playing and quick-access playlist widgets
- ReplayGain Support: Automatic volume normalization for consistent listening experience
- Embedded Artwork: Displays album art from FLAC, WAV, M4A, MP3, Opus, OGG, DSD, and DSF.
- 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

Siri & Apple Intelligence
- Modern App Intents integration: play any song, album, artist, or playlist by voice — no Shortcuts setup needed
- AI Mix Generation: ask Siri to "Make me a mix on Cosmos" and Apple Intelligence builds a mix from your own library, fully on-device
- Voice actions: resume playback, favorite the current song, add songs to playlists
- Spotlight integration: your entire library is searchable from iOS system search

Supported Siri Commands
- "Hey Siri, play [song/album/artist/playlist] on Cosmos"
- "Hey Siri, resume playback in Cosmos"
- "Hey Siri, add this song to my favorites in Cosmos"
- "Hey Siri, make me a mix in Cosmos"

Credits

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

## Key features

- Offline music playback
- iCloud Drive synchronization
- Local file storage
- FLAC and WAV support
- Graphic equalizer
- Apple CarPlay integration
- Artist information integration

## Recent user reviews (10 of 41)

All indexed reviews: https://appshunter.io/ios/app/cosmos-offline-music-player/id6751984723/reviews.md

### 4/5 — A Bug for fixing and suggestion

*2026-08-26*

• When adding songs (putting songs in the dedicated “Music” folder in the app directory), the app seems to stop loading new songs—even after refreshing—past ~150 songs added into that folder. It is either this, or that at the ~150 mark, if you delete a song and then attempt to re-add it through the Music Folder, it will not appear automatically, forcing you to use the “Open Files” button strangely.

You should add a way to edit the file’s tags or lyrics inside of the app.

**Developer response:** Hi if you have any issues you can make one on github. Thanks for the kind comment.

### 4/5 — One of the best offline music player

*2026-08-12*

My main problem is that you have to have your downloaded music saved to the cloud because every time when the app updates, all songs would stop working

### 5/5 — Best at what it is

*2026-07-29, version 1.2.3*

I was searching for a music player to play my music locally offline since I plan on moving away from music subscriptions to owning my own content. I was genuinely surprised that the entire app store didn’t have a single ‘offline music player’ that worked without paying anyone money. This is the only app that does what it says it does, it’s also extremely fast at indexing content, I was able to import hundreds of high quality music within seconds, does a good job at fetching metadata online as well. Really good work to the devs! 💪

### 5/5 — Excellent music player

*2026-07-28, version 1.2.3*

Great app, I think is better then vcl player

### 5/5 — ‼️ Bugs for fixing

*2026-07-24, version 1.2.3*

When large loads of songs are applied (120+ files), the app can begin to break. It may clear your custom playlists or remove all of your songs.

### 5/5 — Ок

*2026-06-21*

Наконец на iPhone появился настолько плеер

### 5/5 — The nearly perfectly open-source & zero telemetry music player I've waited YEARS for!

*2026-06-16*

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. 🙂

**Developer response:** Love the feedback unfortunatly, the format M3U and M3U8 works with path that is probably from your windows / desktop app anyway so cross referencing that is impossible. Will see what i can do for the crash on huge loads.

### 4/5 — Зависает

*2026-06-08*

Приложение удобное, но есть пара замечаний. После последнего обновления периодически зависает и сбрасывает песню при прослушивании, либо пропускает песни при выборе песни, то есть он даже не включает ее, а просто включает следующую. С файлами проблем нет, они проигрываются на телефоне без ошибок, в самом плеере тоже через раз проигрываются. Очень часто зависает сам интерфейс, не реагирует на нажатия. Также при нажатии на сердечко не всегда добавляет песню в избранное. Также порой при сворачивании приложения и повторном разворачивании звук становится громче, притом что звук системы телефона не меняется. И хотелось бы видеть возможность редактировать имя песни, а то порой песни добавляются в виде символов

**Developer response:** If you have any issues make an issue on the github repository.

### 4/5 — Helpp

*2026-06-03*

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)

### 5/5 — Nostalgic

*2026-05-30*

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!

## Frequently asked questions about Cosmos

### What is Cosmos Music Player?

Cosmos Music Player is a completely free, open-source music player for iOS. It offers high-quality audio playback for various formats, including lossless options like FLAC and WAV. You can manage your music library using either iCloud Drive synchronization or local storage on your device.

### What are the key features of this music player?

Key features include support for high-quality lossless audio formats (FLAC, WAV), dual storage options (iCloud Drive and local files), a graphic equalizer for audio customization, seamless Apple CarPlay integration, and comprehensive artist information pulled from Discogs and Spotify APIs.

### Is this app free to use?

Yes, the app is completely free to use. It does not have any in-app purchases, advertisements, or user tracking. The developers emphasize its open-source nature and commitment to a user-friendly, ad-free experience.

### What audio formats does it support?

It supports a wide range of audio formats, including high-quality lossless options like FLAC, WAV, and DSD. It also supports common formats such as M4A, MP3, Opus, and OGG. DSD playback is supported via DoP and PCM conversion.

### How does the storage work?

You have two primary storage options: iCloud Drive, which allows your music library to sync across your Apple devices, or local storage, where music files are stored directly on your iPhone or iPad. The app automatically indexes music from both locations.

## Version history (last 5 releases)

### 1.2.5 — 2026-09-08

Search is now available across songs, favorites, artists, albums, and playlists.
Lyrics have been redesigned with smoother synchronization, tap-to-seek, instrumental breaks, offline caching, and alternate versions.
Added broader support for Opus, Ogg, FLAC, AAC/M4A, DSF, and DFF files.
Improved playback stability, gapless transitions, seeking, Bluetooth, CarPlay, and audio interruption handling.
Added appearance options: System, Light, and Dark.
Added controls for automatic library scan frequency and artist organization.
Added a Create Playlist button when no playlists exist.
Improved artwork loading for iCloud and externally imported music.
Improved Siri, widgets, CarPlay, and Share extension reliability.
Fixed library issues involving moved, renamed, restored, or temporarily unavailable files.
Added and improved translations across all supported languages.
Includes numerous performance improvements and bug fixes.

### 1.2.4 — 2026-08-05

Fix hang issues.
Various ui improvments.
Various ux improvments.
Filled missed translations.
Slight optimization of battery usage.
Added cache management.
Fixed handling of audio route changes.

### 1.2.3 — 2026-07-21

Siri improvements

Better song matching tolerates transcription errors, spelling mistakes and incomplete titles.
Ambiguous requests are ranked against your library instead of requiring an exact title.
Ask Siri to add the current or named song to your favorites or to a specific playlist.
Added commands for resuming playback, managing the queue and playing playlists.
Added richer Siri and Shortcuts result cards.

Apple Intelligence features
Create a playlist from a natural-language description, such as “relaxing piano for the evening.”
Ask Siri to generate a mix based on a mood, activity, genre or artist.
Additional on-device AI disambiguation when several songs are plausible matches for a Siri request or without needing exact name of the song using the local llm.

Additional improvements

Fixed CarPlay crashes when switching playback between iPhone and CarPlay and auto pause.æ
Added gapless audio playback for compatible tracks.
Improved artwork loading, scrolling and library scanning performance.
Improved multi-artist, album and duplicate artists / albums.
Added an option to desactivate automatic folder-playlist creations.
Expanded russian localization and general playback reliability.
Library scans now detect metadata changes, update modified tracks.
Additional stability, performance, localization, and interface improvements.

### 1.2.2 — 2026-05-03

Stabilty improvments
Sizing issues fixed when user had too much zoom
Added playlist and album covers on carplay
Fixed audio focus being active when not playing a song from the app
Better handling of seperated artists
Better handling of file wich not block when identical file name is used
Added countdown optional button for player
Added Chinese translation

### 1.2.1 — 2026-03-26

- Playing a song on search will start on an empty queue and a long click on a song give you options to do things (add to playlist etc...)
- You can customize the home screen and organize in what order you want your sections.
- Songs on queue can be removed.
- Fixed bug with padding on playlist.
- Fixed issue when a app ask for sound focus and a paused song would restart after that.

## Apps similar to Cosmos

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [HiFier: HiFi Music Player](https://appshunter.io/ios/app/hifier-hifi-music-player/id6740998246) | 3.8 (21) | Free | Music |
| [Synic - Offline Music Player](https://appshunter.io/ios/app/synic-offline-music-player/id6747572522) | 4.4 (28) | Free | Music |
| [Musiq: Offline Music Player](https://appshunter.io/ios/app/musiq-offline-music-player/id6740071848) | — | Free | Music |
| [Sonora - Offline Music Player](https://appshunter.io/ios/app/sonora-offline-music-player/id6742758454) | 4.4 (49) | Free | Music |
| [Jewelcase](https://appshunter.io/ios/app/jewelcase/id6642683626) | 4.8 (64) | Free | Music |
| [Steve - Ad-Free Music Player](https://appshunter.io/ios/app/steve-ad-free-music-player/id6751122850) | 4.8 (67) | Free | Music |

## Related topics

[cosmos music player](https://appshunter.io/ios/topics/cosmos-music-player) · [doppler music player](https://appshunter.io/ios/topics/doppler-music-player) · [fresco 360](https://appshunter.io/ios/topics/fresco-360) · [audiofile ddp player](https://appshunter.io/ios/topics/audiofile-ddp-player) · [cosum](https://appshunter.io/ios/topics/cosum) · [var player](https://appshunter.io/ios/topics/var-player) · [lmplayr pro](https://appshunter.io/ios/topics/lmplayr-pro) · [bismark m16](https://appshunter.io/ios/topics/bismark-m16) · [isoundscute](https://appshunter.io/ios/topics/isoundscute)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-09.*