Other Pass Prediction Tools

This is a collection of tools to help you know when the next satellite passes are happening.

On the web:

On an Android:

  • ISS Detector – this is the one I use. It is the most full-featured one I have found. It also puts events in your calendar. $2.99 to track all the ham satellites.
  • Look4Sat – as good as ISS Detector but does not put events in your calendar.
  • ORBIT – this is a hosted open-source browser-based app.
  • Unixeer – The all-in-one, multi-platform application for amateur radio satellite tracking. Real-time visualization, pass predictions, QSO logging, and more—all in one powerful tool.

On an iPhone:

  • ISS Detector – this is the one I use. It is the most full-featured one I have found. It also puts events in your calendar. $2.99 to track all the ham satellites.
  • GoSatWatch – well recommended. $9.99
  • ORBIT – this is a hosted open-source browser-based app.
  • Unixeer – The all-in-one, multi-platform application for amateur radio satellite tracking. Real-time visualization, pass predictions, QSO logging, and more—all in one powerful tool.

On PC/Mac/Linux:

  • SkyRoof – Windows application for Hams and satellite enthusiasts
  • Visible Ephemeris – Linux/Raspberry Pi High-Performance Satellite Tracking Appliance
  • Zenith – (Self-host) A modern web-based satellite tracking application designed for amateur radio operators and satellite enthusiasts. Zenith provides real-time satellite tracking, pass predictions, and radio integration features.
  • Unixeer – iOS/macOS/Android/Windows/Linux – The all-in-one, multi-platform application for amateur radio satellite tracking. Real-time visualization, pass predictions, QSO logging, and more—all in one powerful tool.

Updated Dec 25, 2025. Updates, changes, or suggestions please email David, N9KT.