Mix Library

A phone‑native home for a private archive of DJ mixes.

Mix Library turns a private web archive of DJ mixes and radio programs into a native iPhone and iPad app. Mixes keep playing with the screen off, resume where you left off, and come with their tracklists, so the question “what was that track?” finally has a good answer.

iPhone and iPadPrivate betaNo analytics

Listening

Long mixes, played properly.

Some of these mixes run three hours. The app is built around that: playback never depends on keeping the screen on, and nothing makes you start over.

Background playback: Keeps playing with the screen locked, with controls on the Lock Screen and in Control Center.
Picks up where you stopped: Every mix remembers its own position.
AirPlay: Sends audio to speakers and to an Apple TV.
Preview without interrupting: Opening another mix shows its details without stopping the one that is playing.

Tracklists

Two lists, honestly labeled.

Many mixes have two tracklists that are wrong in opposite ways. Rather than pick one, the app shows both and says which to trust for what.

Detected: Times measured from the audio are exact, though names are sometimes wrong.
Published: Track names are right, but some rows may have no time.
You are here: The track playing right now is highlighted.
Jump to a track: Tap a row to start playing from it.

On iPhone

The library in your pocket.

Every screen shows sample data: the titles, artists, tracklists and covers were invented for this page.

Mix Library’s main screen on iPhone, showing a Mixes row, a Bookmarks row, five collections and a list of genres, with All, Keepers, Mine and Unrated filters at the top. — Library
Organized by collection and genre.

A scrolling list of mixes on iPhone, each with an artist, a duration, a year and star ratings, and a search field at the bottom. — Mixes
Your rating beside the curator’s.

Bookmarks

For “what was that?”

A mark is a note to your future self about one moment in one mix.

Lands where you meant: The mark is placed 15 seconds before your tap, because the moment has usually already passed.
Shows the neighbors: Each mark lists the track playing then, plus the one before and after.
Notes: Add a line of text to any mark.
On every device: Marks are kept with your account, so they appear on each device you sign in on. Other listeners cannot see them.

The library

The archive’s own shape.

Thousands of hours of mixes, organized the way the archive organizes them and carried over to native screens.

Collections and genres: Browse the way the archive is arranged.
Four views: Everything, Keepers, Mine, and Unrated.
Ratings: Give a mix up to three stars, and see who else kept it.
Downloads: Save mixes to the device; mixes you have downloaded play without a connection.
iPad and Mac: A sidebar layout on iPad, and the same app on Apple silicon Macs, as the iPad app.

On iPad

Room to browse.

A sidebar for the library, and Now Playing with your marks and the tracklist together.

Mix Library on iPad in a two-column layout: collections and genres in a sidebar on the left, and the list of mixes on the right. — The sidebar layout
Collections and genres beside the mixes.

The iPad Now Playing sheet: cover art, playback controls at about 23 minutes, a Your marks section with two bookmarks, and a tracklist with the current track highlighted. — Now Playing
Marks and tracklists together.

The iPad Bookmarks sheet listing three marked moments with neighboring tracks and notes. — Bookmarks
Every marked moment, with notes.

How it works

A window onto the archive.

Mix Library is a window onto an archive that lives somewhere else. You sign in once with a passphrase, and from then on the app streams mixes from the archive.

Streams from the archive: Browsing and streaming need the archive; mixes you have downloaded play without a connection.
Downloads stay on the device: Downloaded mixes are saved on the device and appear in the Files app. They are not uploaded to iCloud.
Bookmarks follow you: Bookmarks are saved with your account on the archive, so they appear on each of your devices.
A status light: A small light shows whether the archive’s connection is healthy, so a slow evening at the other end is not mistaken for a broken app.
Native code: Written in Swift and SwiftUI, with no third‑party code. Playback controls appear wherever the system shows Now Playing.

Privacy

What stays where.

No tracking code: The app has no advertising or analytics code and no third‑party libraries.
Your passphrase: Stored in the device’s Keychain.
Your ratings: Visible to other listeners of the same archive.
Your bookmarks: Saved with your account; other listeners cannot see them.