A high-quality music player built specifically for audiophiles and personal music libraries

Focused on better sound quality and effortless browsing and management of your personal music library, with enhanced support for external DAC playback.

App Store · $59.99 Try Free for 1 Month

macOS · iOS · Windows

Why I Built Mossca

As an audiophile, I grew tired of the ads and distractions of online music services, overloaded feature sets, and the uncertainty that music I enjoy could disappear at any time. Years ago, I began focusing on building my own local lossless music library.

Today, my library contains more than 10,000 albums across many formats and genres, and it is still growing quickly. I have always wanted a player truly designed for personal music collections: easy to browse, manage, and play; capable of excellent sound quality; and simple enough to let me focus on the music. No unnecessary clutter—just simple, focused, and restrained. It should connect both to music stored on local drives and to a NAS for real-time remote playback without sacrificing lossless quality.

I tried many apps recommended by audiophiles. Some did not sound good enough. Some were overly complicated and exposed far too many engineering parameters. Others still looked like software from another era. So I decided to build my own: a high-quality player for personal music collections, friendly to large libraries, with an interface I enjoy, reliable playback and control, and most importantly, audiophile-grade sound quality.

That was the original idea behind Mossca. I started developing it in March this year, and it is still evolving rapidly. Suggestions and feedback are always welcome.

As an audiophile myself, I use and improve Mossca every day. Mossca currently covers Mac and iOS, with a Windows version in development. Our own Mossca Server has also just been released. It can be deployed free of charge on a NAS, provides a Web Player, and connects directly with Mossca clients.

Core Features

Designed for personal music collections.

Connect Your Music Library in Multiple Ways

No matter how your music collection is stored, Mossca makes it easy to connect and play.

Local Music Library

Import local music directly
Batch import from a computer browser using Wi-Fi Transfer
Batch import through the iOS Files app
One-click sync with your Mac music library

Music Servers

If you run your own music server, you can connect through WebDAV or SMB for downloading and importing, or connect directly to a hosted music server.

Mossca Server
Navidrome / OpenSubsonic
Jellyfin
Emby
Plex

You can configure transcoding format and bitrate, giving you flexible access to your own music library across desktop, web, mobile, and CarPlay.

Want to understand how Mossca Server differs from services such as Navidrome?View Mossca Server View detailed support for Navidrome-compatible services

Sound Quality Is at the Core of Mossca

Every design and engineering decision is centered around sound quality, with the goal of getting as much as possible from your system and audio hardware.

Playback Capabilities

Bit-Perfect (Mac)
Exclusive Output (Mac)
External DAC optimization
DSD playback via DoP

Audio Processing Pipeline

Sample Rate Upsampling Learn More >
PCM → DSD Modulation Output Learn More >
Headphone Tuning Profiles Learn More >
10-Band EQ

PCM supports up to 32-bit / 768 kHz, and DSD up to DSD512. Actual capabilities depend on the operating system, output mode, and audio device. If your DAC does not support the target DSD specification, Mossca prioritizes keeping the DoP path with the closest supported parameters whenever possible to minimize unnecessary audio degradation.

Browse and Manage Your Music Library

A personal music library should be more than a collection of files. Mossca organizes your collection in two complementary ways.

Built Around Artists and Albums

We do not design the library around individual tracks, because an album is a complete artistic expression. Mossca reorganizes your collection so you can rediscover your own music with an experience closer to modern online music services.

Recently Played
Recently Added
Album of the Day
Artist of the Day
Decades
Genres
Music Culture

Connect Albums and Artists with Tags

Tags provide a flexible way to connect music across your library. In the future, Mossca Server will automatically generate Tags for your collection without writing them into the source file Metadata. For example:

Sleep at Night
Island Vacation
Top 500 Contemporary Rock Albums
Taiwan Post-Rock

We want you to explore and enjoy your personal music collection without rigid organizational limits. Note: The Tag system is currently in development and is planned exclusively for Mossca Server. For music library management, we are also building Server-based automatic correction and metadata completion features to reduce the need for repetitive manual editing. This feature is currently in development.

Other Experiences We Continue to Improve

Radar: Provides multidimensional signal analysis and spectrum views of mastering characteristics for local albums, helping you understand the audio quality of your collection.
Multiple Themes: More visual themes and styles continue to be added.
CarPlay: Play downloaded music or stream over mobile networks, with transcoding and bitrate controls to optimize speed and data usage.
Remote: Use the Remote App at home to control Mossca playback on your computer.
Last.fm: Supports Last.fm Scrobbling to automatically sync your listening history.
Multiple Playback Modes: Includes Radio Mode for randomized listening across your library and a classic iPod-inspired wheel mode.

These playback modes are currently available only on iOS.

Specifications

A high-quality personal music playback experience designed for iPhone and iPad.

iPhone & iPad

Mossca for iPhone & iPad

Supported Formats

DSD: DSF / DFF · FLAC · WAV · AIFF · ALAC · MP3 · AAC / M4A · CUE sheets

System Requirements

iOS 17.6 or later

iPhone · iPad

Languages

简体中文 · 繁體中文 · English · 日本語 · 한국어 · Deutsch · Français · Español · Português (Brasil) · Italiano · Polski · Русский

Music Sources & Connections

Local Music

Supports music stored locally on iPhone / iPad and music imported through the system Files interface.

SMB / WebDAV

Access music stored on NAS devices, home servers, and other network storage through SMB or WebDAV.

Music Servers

Supports Mossca Server, Navidrome / Subsonic, Emby, Jellyfin, and Plex music libraries.

Original Audio & Server Transcoding

Play original audio streams directly or use server-side transcoding. Available formats and bitrates depend on server configuration.

Custom HTTP Header

Configure custom HTTP Header values for remote music servers, including Reverse Proxy and Cloudflare Access environments.

Dual-Address Connection

Configure separate LAN and remote addresses for a music server, with automatic switching based on the current network.

Audio Engine & Output

Output Devices: Supports iPhone / iPad audio output, headphones, and compatible external DACs.
High-Resolution PCM: Supports high-resolution PCM playback. Maximum specifications depend on the audio file, device, and current output path.
DSD Playback: Supports DSF / DFF and selects a compatible DSD playback path based on the device and output capabilities.
DSD DoP: Supports DoP output through compatible external DACs. Available DSD rates depend on the device, connection, and DAC capabilities.
SRC / Upsampling: Provides high-quality sample-rate conversion and PCM upsampling to higher output sample rates.
PCM → DSD: Supports real-time conversion of PCM to DSD for output through compatible external DACs.
10-Band EQ: Supports 10-band equalizer adjustment.
Headphone Tuning: Applies frequency-response correction profiles for supported headphone models.
Signal Path: Displays the current decoding, DSP, sample-rate conversion, DSD, and output-device path.

Library Browsing

Album / Artist: Browse your personal music collection around albums and artists.
Genre: Browse your library by genre.
Search: Search Album, Artist, and Track content.
Favorites: Save albums, artists, and other music content as favorites.
Recently Played: View recently played music.
Server Home: Browse Recently Played, Recently Added, Album of the Day, Artist of the Day, Decades, and other music sections when connected to a supported music server.

Playback & Content

CUE Albums & Tracks: Automatically parses full-album audio with CUE sheets and presents individual tracks for browsing and playback.
Artwork: Reads embedded artwork and cover image files stored in music folders.
Lyrics: Supports local lyrics, embedded lyrics, and online lyric matching.
Artist Bio: Retrieves artist biography information online.
Play Queue: Manage the current queue and upcoming music.

Special Playback Modes

iPod Mode: Provides a dedicated playback interface inspired by classic iPod interaction.
Radio Mode: Provides continuous radio-style playback based on the current music library.

Interface & Personalization

Multiple Themes: Choose from multiple interface themes.

Offline & Sync

Remote Music Downloads: Download music from supported music servers to iPhone / iPad.
Offline Playback: Play downloaded music without a network connection.
Mac ↔ iPhone / iPad Sync: Sync personal music content between Mac and iPhone / iPad.

System & Service Integration

CarPlay: Browse and play your personal music collection through CarPlay.
Last.fm: Supports Last.fm Scrobbling.
Notes: Availability of DSD DoP, PCM → DSD, high-resolution PCM, SRC / Upsampling, and related capabilities depends on the audio file, iOS, selected output path, connection method, and connected audio hardware.

Availability of DSD DoP, PCM → DSD, high-resolution PCM, SRC / Upsampling, and related capabilities depends on the audio file, iOS, selected output path, connection method, and connected audio hardware.

Your music deserves to be listened to with care.

Download Mossca