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SideDeck

Free DJ app. Mix on your phone. No subscriptions.
SideDeck is a free, open-source DJ app for Android. Mix local files on dual decks, or plug in a USB mixer such as the Teenage Engineering EP-136 K.O. Sidekick and mix on the hardware. No monthly subscription, no paywall, no premium tier.

MIX ON THE PHONE, OR ON HARDWARE

Use SideDeck as a standalone DJ app: landscape dual decks, waveforms, 3-band EQ, filter, and a crossfader. Or connect a USB mixer and send Deck A and Deck B out as separate stereo channels so you EQ, cue, and mix on the device.

SideDeck is built to work with the Teenage Engineering EP-136 K.O. Sidekick. Connect the EP-136 over USB, set Sidekick USB mode to Multi, and enable the external mixer in SideDeck. Deck A and Deck B go out separately so you can mix on the EP-136. The on-screen EQ and crossfader step aside so you're mixing on the hardware, not fighting a software mixer.

Other USB mixers that can take Deck A and Deck B as separate outputs work the same way.

YOUR MUSIC, YOUR SERVER

SideDeck plays tracks from your phone and from a Subsonic music server. Point it at any Subsonic-compatible library, browse albums and tracks, and download them to the device.

Load music from folders on the phone. Analyze BPM and musical key on load. The library highlights keys that sit well with what's already on a deck.

WHAT YOU CAN DO

• Dual-deck landscape DJ layout with waveforms
• Sync, loops, BPM nudge and jump
• Internal mixer: 3-band EQ, filter, crossfader
• USB out to the Teenage Engineering EP-136 K.O. Sidekick (and similar mixers)
• Subsonic browse and download
• Local library with BPM and key analysis

FREE AND OPEN SOURCE

SideDeck is GNU GPL v3 software. There is no subscription, no in-app DJ "pro" unlock. If you want a DJ app that works with the Teenage Engineering EP-136 K.O. Sidekick, talks to a Subsonic server, and stays free, this is it.

Requires Android 8.0 or later. USB host (OTG) on the phone if you use an external mixer such as the EP-136 K.O. Sidekick.

Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

Download F-Droid
  • Version 1.1.1 (73) suggested Added on Oct 02, 2026

    x86_64

    This version requires Android 8.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • change your audio settings
      Allows the app to modify global audio settings such as volume and which speaker is used for output.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • read audio files from shared storage
      Allows the app to read audio files from your shared storage.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • es.manifold.sidedeck.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 21 MiB PGP Signature | Build Log

  • Version 1.1.1 (72) - Added on Oct 02, 2026

    arm64-v8a

    This version requires Android 8.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • change your audio settings
      Allows the app to modify global audio settings such as volume and which speaker is used for output.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • read audio files from shared storage
      Allows the app to read audio files from your shared storage.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • es.manifold.sidedeck.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 19 MiB PGP Signature | Build Log

  • Version 1.1.1 (71) - Added on Oct 02, 2026

    armeabi-v7a

    This version requires Android 8.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • change your audio settings
      Allows the app to modify global audio settings such as volume and which speaker is used for output.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • read audio files from shared storage
      Allows the app to read audio files from your shared storage.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • es.manifold.sidedeck.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 16 MiB PGP Signature | Build Log

  • Version 1.1.0 (63) - Added on Sep 09, 2026

    x86_64

    This version requires Android 8.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • change your audio settings
      Allows the app to modify global audio settings such as volume and which speaker is used for output.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • read audio files from shared storage
      Allows the app to read audio files from your shared storage.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • es.manifold.sidedeck.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 21 MiB PGP Signature | Build Log

  • Version 1.1.0 (62) - Added on Sep 09, 2026

    arm64-v8a

    This version requires Android 8.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • change your audio settings
      Allows the app to modify global audio settings such as volume and which speaker is used for output.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • read audio files from shared storage
      Allows the app to read audio files from your shared storage.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • es.manifold.sidedeck.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 19 MiB PGP Signature | Build Log

  • Version 1.1.0 (61) - Added on Sep 09, 2026

    armeabi-v7a

    This version requires Android 8.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • change your audio settings
      Allows the app to modify global audio settings such as volume and which speaker is used for output.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • read audio files from shared storage
      Allows the app to read audio files from your shared storage.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • es.manifold.sidedeck.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 16 MiB PGP Signature | Build Log

  • Version 1.0.4 (53) - Added on Aug 27, 2026

    x86_64

    This version requires Android 8.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • change your audio settings
      Allows the app to modify global audio settings such as volume and which speaker is used for output.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • read audio files from shared storage
      Allows the app to read audio files from your shared storage.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • es.manifold.sidedeck.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 20 MiB PGP Signature | Build Log

  • Version 1.0.4 (52) - Added on Aug 27, 2026

    arm64-v8a

    This version requires Android 8.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • change your audio settings
      Allows the app to modify global audio settings such as volume and which speaker is used for output.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • read audio files from shared storage
      Allows the app to read audio files from your shared storage.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • es.manifold.sidedeck.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 19 MiB PGP Signature | Build Log

  • Version 1.0.4 (51) - Added on Aug 27, 2026

    armeabi-v7a

    This version requires Android 8.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • change your audio settings
      Allows the app to modify global audio settings such as volume and which speaker is used for output.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • read audio files from shared storage
      Allows the app to read audio files from your shared storage.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • es.manifold.sidedeck.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 16 MiB PGP Signature | Build Log