# OS-39: Music Player & Streamer — Hi-Res Audio, EQ & Self-Hosted > Premium music player for local and self-hosted streaming with advanced audio controls and visualizers. (iPhone/iPad app by Bryan Jeffrey Martin.) - Source: https://appshunter.io/ios/app/os-39-music-player-and-streamer/id6757801521 (this page in markdown: same URL + `.md`) - Developer: [Bryan Jeffrey Martin](https://appshunter.io/developer/1847187783) - Category: Music, Utilities - Price: Free with in-app purchases - Rating: 4.00/5 from 1 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 26.0 · 12 MB - Languages: American English, Japanese - Released: 2026-01-15 - Data updated: 2026-09-07 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/os-39-music-player-and-streamer/id6757801521/reviews.md ## What is OS? Experience your music collection through a lens of clean design and technical precision. OS-39 is a premium Digital Audio Player (DAP) designed for those who value their music — whether stored locally on-device or hosted on their own server — offering a focused listening experience without subscriptions, ads, or distractions. YOUR COLLECTION, YOUR WAY OS-39 is built for your music. Import your high-quality audio files directly from the Files app using advanced in-place linking, or stream directly from your self-hosted WebDAV, Navidrome, or Plex server. Whether it's FLAC, ALAC, M4A, or MP3, OS-39 handles your high-fidelity files with ease — locally or over the network. STREAM YOUR SELF-HOSTED MUSIC For Pro users, OS-39 connects to your personal WebDAV server, Navidrome server, or Plex Media Server and lets you browse your remote library folder by folder. Stream any supported audio file directly, or import albums and tracks into your local library for offline playback. Credentials are stored securely in the system Keychain — enter them once and never again. Supports WebDAV-compatible servers (NAS devices, HTTP servers, etc.), Navidrome servers, and Plex Media Server. Streams M4A, MP3, FLAC, AAC, WAV, AIFF, and ALAC. IMMERSIVE VISUALS Get lost in the music with reactive visualizers. From the fluid "Aurora" backgrounds to the tactile "Ripple" fields, your screen becomes a functional extension of the soundscape. PRO-GRADE AUDIO CONTROL Tailor every track with a simple 5-band or professional 10-band ISO Equalizer. Save custom EQ profiles for specific albums or playlists to ensure your gear always sounds its best. SMART DISCOVERY The on-device OS-39 Recommendation Engine learns your habits based on time, day, and season. Rediscover your library with "Forgotten Gems" and personalized daily suggestions that never leave your device. Your data stays private and secure. View how the Engine works — and enable or disable it — directly in the app. KEY FEATURES • Gapless Playback & Customizable Crossfade (Pro) • 10-Band Equalizer with Presets (Pro) • Stream from WebDAV & Plex Servers (Pro) • Import Remote Music to Local Library (Pro) • Import Your Music: Play directly from the Files app • Beautiful Aesthetic Themes: Vocaloid, Sakura, Tokyo Tower, and more • Interactive Widgets: Quick access to your favourites and recent plays • Haptic Feedback: A tactile, mechanical feel to every interaction • Privacy First: No tracking, no data collection UPGRADE TO PRO Unlock the full OS-39 experience with a simple one-time purchase. No subscriptions, forever. • Advanced Playback: Gapless & Crossfade • Full 10-Band Equalizer Access • Self-Hosted Streaming: WebDAV & Plex • Import Remote Music to Your Local Library • Exclusive Premium Themes • Exclusive Visualizers • Enhanced Library Intelligence Elevate your listening experience. Welcome to OS-39. ## Key features - 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 ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Pro (Permanent Unlock) | $4.99 | one-time | ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/os-39-music-player-and-streamer/id6757801521/reviews.md ### 4/5 — Love the app design, wish we could add more audio sources *2026-04-14* 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 **Developer response:** 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! ## Frequently asked questions about OS ### 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. ## Version history (last 5 releases) ### 2.10 — 2026-09-05 - Fixes a bug where users can get stuck in the Search screen by adding a back button. - Adds more Player UI customization options, including: Square Album Art, and Background Album Art! ### 2.02 — 2026-08-31 Fixes some user reported issues and some UX improvements. ### 2.01 — 2026-08-28 Hi, and thank you for using OS-39. I worked long nights and hard on version 2.0 to bring some pretty big and awesome updates -- all driven by user feedback! If you enjoy the app, please consider rating us on the App Store -- it helps a lot. And if you have any feature requests, reach out to us via Email in the app settings! - Responsive Landscape Support: Turn your device sideways to enjoy dynamic 3 & 4 column grids across Albums, Playlists, and Folders on iPhone and iPad. - Split-View Master & Detail: Browse Playlists and Folder structures side-by-side in landscape mode with instant live track previews. - Compact Docked MiniPlayer: In landscape orientation, the mini player smoothly docks into the bottom corner so your music controls never block your view. - Custom Folders & Reordering: Easily organize your favourite music into custom folders and reorder songs, albums, and playlists. - Disk Directory Browsing: Browse your local files and server music directly by folder structure. - Interactive Tag Editing: View metadata and manage custom #tags directly inside the Song Details sheet. - Enhanced Downloads & Streaming: Enjoy faster background downloads for offline listening with real-time progress indicators. - Modernized Liquid Glass Look: Updated mini player with translucent glass styling and subtle ambient glows. - New music player customizations -- including "skip/previous" buttons and gestures in songs. - LRC support is in beta, supporting real-time lyrics! ### 2.0 — 2026-08-20 Hi, and thank you for using OS-39. I worked long nights and hard on version 2.0 to bring some pretty big and awesome updates -- all driven by user feedback! If you enjoy the app, please consider rating us on the App Store -- it helps a lot. And if you have any feature requests, reach out to us via Email in the app settings! - Responsive Landscape Support: Turn your device sideways to enjoy dynamic 3 & 4 column grids across Albums, Playlists, and Folders on iPhone and iPad. - Split-View Master & Detail: Browse Playlists and Folder structures side-by-side in landscape mode with instant live track previews. - Compact Docked MiniPlayer: In landscape orientation, the mini player smoothly docks into the bottom corner so your music controls never block your view. - Custom Folders & Reordering: Easily organize your favourite music into custom folders and reorder songs, albums, and playlists. - Disk Directory Browsing: Browse your local files and server music directly by folder structure. - Interactive Tag Editing: View metadata and manage custom #tags directly inside the Song Details sheet. - Enhanced Downloads & Streaming: Enjoy faster background downloads for offline listening with real-time progress indicators. - Modernized Liquid Glass Look: Updated mini player with translucent glass styling and subtle ambient glows. - New music player customizations -- including "skip/previous" buttons and gestures in songs. - LRC support is in beta, supporting real-time lyrics! ### 1.73 — 2026-08-11 This release fixes a bunch of issues with local music playback and streaming. Thank you for using OS-39! ## Apps similar to OS | App | Rating | Price | Category | | --- | --- | --- | --- | | [Music Downloader & MP3 Player+](https://appshunter.io/ios/app/music-downloader-and-mp3-player-plus/id6748637022) | 4.0 (27) | Free | Music | | [MasterTube: Music Player](https://appshunter.io/ios/app/mastertube-music-player/id6753216350) | 1.0 (2) | Free | Music | | [LudyAmp - Offline Music Player](https://appshunter.io/ios/app/ludyamp-offline-music-player/id6759071307) | 3.6 (20) | Free | Music | | [Offline Music - WristPlayer](https://appshunter.io/ios/app/offline-music-wristplayer/id6740153794) | 4.5 (34) | Free | Music | | [Synic - Offline Music Player](https://appshunter.io/ios/app/synic-offline-music-player/id6747572522) | 4.4 (28) | Free | Music | | [POPMusic: MP3 Player, Offline](https://appshunter.io/ios/app/popmusic-mp3-player-offline/id6578425997) | 4.0 (11) | Free | Music | ## More apps by Bryan Jeffrey Martin - [Spent Today: Expense Tracker](https://appshunter.io/ios/app/spent-today-expense-tracker/id6754225263) - [Pattern Projects: Sew & Knit](https://appshunter.io/ios/app/pattern-projects-sew-and-knit/id6754258425) - [Camera Plan: Photoshoot Tools](https://appshunter.io/ios/app/camera-plan-photoshoot-tools/id6754294154) - [My Inventory Stack](https://appshunter.io/ios/app/my-inventory-stack/id6755137430) - [Habit Habit - Daily Tracker](https://appshunter.io/ios/app/habit-habit-daily-tracker/id6755456223) - [Simulated Film: Film Recipes](https://appshunter.io/ios/app/simulated-film-film-recipes/id6755539247) All apps by Bryan Jeffrey Martin: https://appshunter.io/developer/1847187783 --- *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 2026-09-07.*