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Look4Sat: Satellite tracker

Radio satellite tracker and pass predictor for Android
New in version 3.1.4
Aligned ROTCTL command with Gpredict #121
Added ingoring inactive transmitters #125
Fixed the satellite predictions bug #126
Added date to a satellite pass ENG #127
Track satellite passes with ease!

Thanks to the huge database provided by Celestrak and SatNOGS you have access to more than 5000 active satellites orbiting Earth. You can search the entire DB by satellite name or by NORAD catnum.

Satellite positions and passes are calculated relative to your location. To get reliable info make sure to set the observation position using GPS or QTH Locator in the Settings menu.

The application is built using Kotlin, Coroutines, Architecture Components and Jetpack Navigation. It is now and always will be completely ad-free and open-source.

Main features:

  • Predicting satellite positions and passes for up to a week

  • Showing the list of currently active and upcoming satellite passes

  • Showing the active pass progress, polar trajectory and transceivers info

  • Showing the satellite positional data, footprint and ground track on a map

  • Custom TLE data import is available via files with TXT or TLE extensions

  • Offline first: calculations are made offline. Weekly update of TLE data is recommended.

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 3.1.4 (314) suggested Added on Mar 16, 2024

    This version requires Android 5.0 or newer.

    It is built by F-Droid and guaranteed to correspond to this source tarball.

    Permissions
    • access approximate location only in the foreground
      This app can get your approximate location from location services while the app is in use. Location services for your device must be turned on for the app to get location.
    • access precise location only in the foreground
      This app can get your precise location from location services while the app is in use. Location services for your device must be turned on for the app to get location. This may increase battery usage.
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • pair with Bluetooth devices
      Allows the app to view the configuration of the Bluetooth on the phone, and to make and accept connections with paired devices.
      (11)
    • connect to paired Bluetooth devices
      Allows the app to connect to paired Bluetooth devices
    • 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.
    • com.rtbishop.look4sat.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 2.2 MiB PGP Signature | Build Log

  • Version 3.1.3 (313) - Added on May 23, 2023

    This version requires Android 5.0 or newer.

    It is built by F-Droid and guaranteed to correspond to this source tarball.

    Permissions
    • access approximate location only in the foreground
      This app can get your approximate location from location services while the app is in use. Location services for your device must be turned on for the app to get location.
    • access precise location only in the foreground
      This app can get your precise location from location services while the app is in use. Location services for your device must be turned on for the app to get location. This may increase battery usage.
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • pair with Bluetooth devices
      Allows the app to view the configuration of the Bluetooth on the phone, and to make and accept connections with paired devices.
      (11)
    • connect to paired Bluetooth devices
      Allows the app to connect to paired Bluetooth devices
    • 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.
    • com.rtbishop.look4sat.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 2.6 MiB PGP Signature | Build Log

  • Version 3.1.2 (312) - Added on Oct 26, 2022

    This version requires Android 5.0 or newer.

    It is built by F-Droid and guaranteed to correspond to this source tarball.

    Permissions
    • access approximate location only in the foreground
      This app can get your approximate location from location services while the app is in use. Location services for your device must be turned on for the app to get location.
    • access precise location only in the foreground
      This app can get your precise location from location services while the app is in use. Location services for your device must be turned on for the app to get location. This may increase battery usage.
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • pair with Bluetooth devices
      Allows the app to view the configuration of the Bluetooth on the phone, and to make and accept connections with paired devices.
      (11)
    • connect to paired Bluetooth devices
      Allows the app to connect to paired Bluetooth devices
    • run foreground service
      Allows the app to make use of foreground services.
    • 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.
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • com.rtbishop.look4sat.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 2.5 MiB PGP Signature | Build Log