Look4Sat
Look4Sat is a free, open-source education app for Android. Satellite tracker and pass predictor for Android. It has 1,508 GitHub stars and is released under the GPL-3.0-or-later license, and you can install it from F-Droid and Google Play.
- Android
- Kotlin
- Education & language
- Actively maintained
About Look4Sat
Track satellite passes with ease! Thanks to Celestrak and SatNOGS you have access to over 9000 active satellites. You can search the entire database by NORAD Catalog Number or the satellite's name. Orbital positions and passes are calculated relative to your location. To get reliable data make sure to set the station position via the app Settings. The application is built using Kotlin, Coroutines, Jetpack Compose and Navigation. It is now and always will be completely ad-free and open-source.
Privacy and F-Droid
F-Droid builds Look4Sat from its published source code and flags anti-features such as ads, tracking or reliance on non-free services.
No anti-features flagged on the latest F-Droid build.
Screenshots
Screenshots from the app's F-Droid listing.
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What is Look4Sat?
Look4Sat is a free, open-source education app for Android. Satellite tracker and pass predictor for Android. It has 1,508 GitHub stars and is released under the GPL-3.0-or-later license, and you can install it from F-Droid and Google Play.
Is Look4Sat free and open source?
Yes. Look4Sat's source code is public on GitHub under the GPL-3.0-or-later license, which is OSI-approved or FSF-free. F-Droid, which builds it from source, flags no anti-features such as ads or tracking on its latest build.
How do I install Look4Sat?
You can install Look4Sat from F-Droid (package com.rtbishop.look4sat) and from Google Play; the links are on this page. Its GitHub repository also publishes releases (latest: v4.4.8).
Is Look4Sat still maintained?
The repository's most recent commit was on Oct 4, 2026. Its F-Droid listing was last updated on Sep 29, 2026. appsgit only lists apps whose repository had a commit in the last six months.