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Kompanion

Remote control companion for KOReader e-readers
Kompanion is a remote control companion app for KOReader. It connects over your
local network to the HTTP Inspector plugin built into KOReader, letting you
control your e-reader from your phone.

Features:

* Frontlight intensity and warmth control
* Night mode toggle
* Full screen refresh
* Five custom profile buttons that activate one of your KOReader profiles
* Page turning with the volume buttons, with remapping capabilities
* Navigate back and forward between followed links, with a custom "back" button
* Text input screen to get, send, and clear text inside any input widget in
KOReader, useful for writing notes from the comfort of your phone
* Reading mode: an immersive mode with minimal UI and minimal brightness
* Keyboard shortcuts: common keyboards are supported, so you can use this app
as a "bridge" for most PowerPoint presenter sticks
* Battery information: fetches the current battery capacity and creates a
graph for the current session

Setup:

1. Install and open KOReader on your e-reader
2. Go to Tools -> More Tools -> KOReader HTTP Inspector and start the HTTP
server (note the port, 8080 by default)
3. Go to Settings -> Network -> Network info and note the device's IP address
4. In Kompanion, enter the IP and port and press "Connect"

This app requires KOReader's HTTP Inspector plugin to be running on the same
local network; it does not talk to any server outside your network.

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 1.4.5 (43) suggested Added on Sep 20, 2026

    x86_64

    This version requires Android 7.0 or newer.

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

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • view Wi-Fi connections
      Allows the app to view information about Wi-Fi networking, such as whether Wi-Fi is enabled and name of connected Wi-Fi devices.
    • allow Wi-Fi Multicast reception
      Allows the app to receive packets sent to all devices on a Wi-Fi network using multicast addresses, not just your phone. It uses more power than the non-multicast mode.
    • 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.
    • control vibration
      Allows the app to control the vibrator.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • com.adpa1013.kompanion.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 19 MiB PGP Signature | Build Log

  • Version 1.4.5 (42) - Added on Sep 20, 2026

    arm64-v8a

    This version requires Android 7.0 or newer.

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

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • view Wi-Fi connections
      Allows the app to view information about Wi-Fi networking, such as whether Wi-Fi is enabled and name of connected Wi-Fi devices.
    • allow Wi-Fi Multicast reception
      Allows the app to receive packets sent to all devices on a Wi-Fi network using multicast addresses, not just your phone. It uses more power than the non-multicast mode.
    • 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.
    • control vibration
      Allows the app to control the vibrator.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • com.adpa1013.kompanion.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 18 MiB PGP Signature | Build Log

  • Version 1.4.5 (41) - Added on Sep 20, 2026

    armeabi-v7a

    This version requires Android 7.0 or newer.

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

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • view Wi-Fi connections
      Allows the app to view information about Wi-Fi networking, such as whether Wi-Fi is enabled and name of connected Wi-Fi devices.
    • allow Wi-Fi Multicast reception
      Allows the app to receive packets sent to all devices on a Wi-Fi network using multicast addresses, not just your phone. It uses more power than the non-multicast mode.
    • 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.
    • control vibration
      Allows the app to control the vibrator.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • com.adpa1013.kompanion.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 15 MiB PGP Signature | Build Log