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OS-39: Music Player & Streamer

OS-39: Music Player & Streamer

Hi-Res Audio & Visualizer

1 ratings
1 review
🔧 Utilities
🎵 Music
Free
In-App Purchases

Details

  • Released
  • Updated
  • January 15, 2026
  • June 27, 2026

Features

Developer

Bryan Jeffrey Martin
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OS-39: Music Player & Streamer screenshot #1 for iPhone
OS-39: Music Player & Streamer screenshot #2 for iPhone
OS-39: Music Player & Streamer screenshot #3 for iPhone
OS-39: Music Player & Streamer screenshot #4 for iPhone
OS-39: Music Player & Streamer screenshot #5 for iPhone
iphone
ipad
🧾$4.99
In-App Purchase↘︎
⭐1
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❓8 answered
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About

A premium music player offering a focused listening experience with advanced audio controls and visualizers. Stream from local files or self-hosted servers, with smart discovery features that keep your data private. Unlock the full experience with a one-time purchase.

✓Hi-Res Audio Playback
✓Stream from WebDAV, Navidrome, Plex
✓Import Remote Music to Local Library
✓10-Band Equalizer with Presets
✓Reactive Visualizers
✓On-device Recommendation Engine
✓Gapless Playback & Crossfade
Show original description

What's New in OS

1.70

June 27, 2026

- OS-39 is now supported on Apple Watch with a dedicated app. - CarPlay support has been added.

1

In-App Purchases

$4.99

Pro (Permanent Unlock)

Unlock advanced playback features like EQs and more.

User reviews

Most RecentHighest RatedLowest Rated

Love the app design, wish we could add more audio sources

I love the design of the app so much, and I want to use it more, but while I get that the large focus of the app is for strictly downloaded playback, I wish we could also mount WebDav libraries as well for a few remote sources
.mirai.mirai

Response from developer

Hey! Thanks for the review. I've added support for WebDAV, Plex, and Navidrome and overhauled the app to support streaming from self-hosted servers. Please try it out and reach out to me in the Email Us button in the app if you run into any issues!

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FAQ

What is OS-39?

OS-39 is a premium music player designed for a focused listening experience. It supports local audio files and streaming from self-hosted servers like WebDAV, Navidrome, and Plex, offering advanced audio controls and visualizers.

Does OS-39 have ads?

No, OS-39 is ad-free. The app is designed to provide a distraction-free listening experience, with no advertisements present.

How can I stream music with OS-39?

You can stream music from your local device's Files app or connect to your self-hosted WebDAV, Navidrome, or Plex Media Server. The Pro version unlocks full self-hosted streaming capabilities.

What audio formats does OS-39 support?

OS-39 supports a wide range of audio formats including FLAC, ALAC, M4A, MP3, AAC, WAV, and AIFF, whether played locally or streamed over the network.

How does the OS-39 Recommendation Engine work?

The on-device Recommendation Engine learns your listening habits based on time, day, and season to suggest forgotten gems and personalized daily recommendations. Your data remains private and secure as it is processed locally.

What features are included in the Pro version of OS-39?

The Pro version, unlocked with a one-time purchase, includes advanced playback features like gapless playback and crossfade, full 10-band equalizer access, self-hosted streaming from WebDAV and Plex, importing remote music to your local library, exclusive themes, and enhanced library intelligence.

Is OS-39 available on all devices?

OS-39 is currently supported on iPhone and iPad devices, offering a premium audio experience across Apple's mobile ecosystem.

How often is OS-39 updated?

OS-39 was last updated on June 27, 2026, with version 1.70. The app is actively developed, ensuring ongoing improvements and feature additions.