Cosmos User Reviews

Customer Experience

Positive experience78.8% of reviews
Neutral12.1% of reviews
Negative experience9.1% of reviews

~ Based on 33 written reviews from the US App Store.

Is Cosmos Safe?

Cosmos : Offline Music Player appears mostly safe based on user ratings. AppsHunter Safety Score for Cosmos is 82/100.

This assessment is based on 32 user ratings, with an App Store average of 4.5/5.

Safety Analysis

84.4% of ratings point to a safe experience
9.4% of ratings suggest some concerns
6.3% of ratings point to a risky experience

~ Based on 32 App Store ratings for Cosmos.

Is Cosmos Legit?

Cosmos : Offline Music Player has limited verification signals. AppsHunter Legitimacy Score for Cosmos is 48/100.

Based on 48 of 100 points across 7 verification signals from App Store and developer data.

Top 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.

Amazing app and UI

I love this music player due to it having a very comfortable and easy to navigate interface it also gives detailed summary about artists and auto imports audio

All I wanted.

Im not sure why this is rated so poorly. It does exactly what I’ve been looking for: play music files in a convenient manner, and it had no obtrusive and annoying ads…

To be fair, I don’t use many features like playlists and I’ve only used it for a small time so I can’t say how good the shuffle feature works. Still, it’s better than the most popular app.
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Absolutely lovely

All I did was convert music video links from YouTube into mp3 files then sent them to the cosmos app. Zero ads ever, zero problems. Just don’t permeantly delete those files from your file app or else the music will all disappear because they’ve been deleted 😭learned that the hard way, which was 1000% on my inexperience. The app is pleasant to use with a friendly user interface
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Could be great but misses the mark

Having to import and make playlists is clumsy as hell and needs to be automated. Shuffle is on permanently no matter what buttons are pressed or settings change. The toggle for shuffle is purely decorative and does nothing. It’s a great player if not for that. Trying to find something better.

Needs improvements

This is not a bad app, but as a regular user I suffer from using it, because it doesn’t follow UX best practices and it has a lot of bugs. I can tell this is a developing app, and it needs more time so the developers can make it perfect.

Response from developer

If you have issues report it if you want it to work on the ux i would love too. Everything is on the github.

Love

Love this i was worried i wouldn't be able to listen to my library because itunes just didnt like the formats i used but this app lets me listen to it.nice beautiful app that does what it's supposed to

Amazing job.

What a beauty. Lovely app at what it does. Some suggestions if you want se feedback:
1. if you search a song, you can’t long press to get options such as adding it to a playlist. You have to play the song first or look it up manually in the all songs sections. Same issue in the queue section.
2. You cannot create a queue/run songs of just the search results. Like some files can have the name of the artist alone and it kinda creates a playlist of that artist songs alone.
3. When you open any playlist, the last song is hidden behind the current playing song, which doesn’t look good.
4. Custom playlist order rather than alphabetical. (The playlists not the songs inside which you can sort manually which is such an underrated feature)
5. A nifty feature would be to allow us to sort songs in the all songs section ‘not in a playlist’. Like in the apple photos app. So if you like to sort all your songs in playlists, this way you can see which ones are left to do.
6. Allow us to remove songs from the queue. This is a big one.
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.

Please add a way to turn off artist info and the artwork.

After using for a while not a fan

At first I really liked this app. But the more I used it the more it feels like it’s vibe coded. Lots of functions don’t work properly like the shuffle button when you import music it makes a bunch of random playlists

Really good music player. Lacking some quality of life/settings

I really like this app, it’s very clean looking and very simple to use. Plays music perfectly well and overall works well for my use case. The only thing I wish I could do was edit the titles, tags, artist, description, etc. for each song. Right now I have a few songs from the same artist but they show up under different artist titles and it would be nice to manually group them together. Overall this is just a nitpick and the app is great either way
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Response from developer

Metadata editing will not be added on the app you can use other app to do that.

Good but I found a very annoying bug!

I love the way you could add offline mo3 and the simplicity of this app, but there is a very annoying bug that made me lose my wake up time be late at work: If you have an alarm set while you are playing a song or a playlist on this app, that alarm goes off in 5 seconds automatically! It seems this app tries to dominate and doesn’t let the alarm continue alarming until you turn it off. (iPhone 17 Pro Max). I hope they can fix this bug! Thanks.
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More modern than the other HD players or even Apple’s without a subscription

I had to update the review

I threw 70gb of offline music into its local folder. Once I got rid of the 30 or so incompatible music files and let it re-index, the UI was smooth.

Some highlights
- The UI is very easy to adapt to.

- It supports external DAC and the option to play DSD using PCM or DoP. (I haven’t tested this yet)

- Lyrics support and artist info are extremely well done

It adds up to cosmos feeling more modern than using Apple’s offering with offline music only.

Things to be aware of,

- Indexing of your songs pauses if you open another app.

- In-car, with this app Siri will not be of use, but once the updated Siri launches things should get better.
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Works as intended

I’ve tried other apps and I didn’t really like their UI. This one is simple and it works well. Only wish that we could import from other sources as well instead of just files. Also, the app could use a better icon(it feels like a sleep tracker app with the cloud)

Response from developer

i like the icons tho :(

I love it!

I genuinely love it as an app, it’s incredibly versatile and all around amazing!
if it’s not too much i’d like to ask for some additions to it if possible. I’d love if there were an option to change the cover photo of songs (that or i just haven’t found it lol) and if there was a way to modify the title and artist in-app would be great additions to it!
Thanks for taking the time to read this.
- Quaxcker
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Phenomenal

One of the best offline music player. The only issue i am facing is that it’s not showing up in my car play. Please fix that.