# Look4Sat (open-source education app)

> 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.

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.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/rt-bishop/Look4Sat |
| Platforms | Android |
| Built with | Kotlin |
| GitHub stars | 1,508 |
| License | GPL-3.0-or-later (open source) |
| F-Droid | https://f-droid.org/packages/com.rtbishop.look4sat/ (package com.rtbishop.look4sat) |
| F-Droid anti-features | none flagged |
| Google Play | https://play.google.com/store/apps/details?id=com.rtbishop.look4sat |
| App Store | not linked |
| Website | none listed |
| Official | no |
| Category | Education & language |
| Latest release | v4.4.8 (Sep 27, 2026) |
| Last commit | Oct 4, 2026 |

F-Droid builds its apps from source and flags anti-features: https://f-droid.org/en/docs/Anti-Features/

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