About
Access your music library from a USB drive on your iPhone. Organize playlists, analyze track compatibility, and build DJ sets with automatic track selection based on key, tempo, and energy. Enjoy background playback and lock screen controls for a seamless experience.
What's New in Rotation
1.0
October 31, 2026
Developer apps
FAQ
What is Rotation?
Rotation is an iPhone music player designed to access your DJ music library stored on a USB drive. It allows you to view playlists, analyze track compatibility, and build DJ sets directly from your phone.
Does Rotation modify my USB drive?
No, Rotation is read-only and CDJ-safe. It never writes to your USB drive, ensuring that nothing on the drive is changed, moved, or added, so it remains ready for use with DJ decks.
Can I mix tracks with Rotation?
Rotation helps you understand what mixes well by showing tracks compatible in key using the Camelot wheel and suggesting tracks that work after the current one. You can also like tracks and pair them with notes for easy mixing.
How does Rotation build DJ sets?
The Auto Rotate feature picks a track and builds a set by choosing the next track based on key, tempo, and energy. You can control the set's progression (steady, build up, wind down) and manage upcoming tracks.
Does Rotation have ads?
No, Rotation is private by design and does not have any ads. It also does not use tracking, ensuring your personal music preferences and saved sets remain on your phone.
What devices does Rotation support?
Rotation is currently supported on iPhone devices. It requires a USB-C adapter to connect your USB drive to your iPhone.
How often is Rotation updated?
Rotation was last updated on October 31, 2026, with version 1.0. As a new release, future updates will likely focus on adding new features and improving performance based on user feedback.
Is Rotation suitable for beginners?
Rotation is a music player, not a full DJ app, focusing on library management and set preparation. Its clean interface and features like "Mixes with" can help users understand track compatibility, making it a useful tool for learning about mixes.