Cosmos : Offline Music Player

Cosmos : Offline Music Player

The open source alternative

33 ratings
33 reviews
Free

Details

  • Released
  • Updated
  • September 23, 2025
  • August 5, 2026

Features

Cosmos : Offline Music Player screenshot #1 for iPhone
Cosmos : Offline Music Player screenshot #2 for iPhone
Cosmos : Offline Music Player screenshot #3 for iPhone
Cosmos : Offline Music Player screenshot #4 for iPhone
Cosmos : Offline Music Player screenshot #5 for iPhone
Cosmos : Offline Music Player screenshot #6 for iPhone
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About

This is a free, open-source music player for iOS that supports high-quality audio formats and offers dual storage options via iCloud Drive or local files. It features advanced playback controls, a graphic equalizer, and comprehensive artist information integration.

Offline music playback
iCloud Drive synchronization
Local file storage
FLAC and WAV support
Graphic equalizer
Apple CarPlay integration
Artist information integration
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What's New in Cosmos

1.2.4

August 5, 2026

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.

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User reviews

‼️ Bugs for fixing

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.

Response from developer

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

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

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. 🙂
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Response from developer

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.

Helpp

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)
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Nostalgic

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!
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It’s good but I have issues

Overall it’s a very good player. I just have issues with removing music. Seems like it’s does not want to update the database. I’ll continue using Foobar2000 for now. Thanks.

FAQ

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.