Look4Sat: Satellite tracker

Arty Bishop

About this app

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.

Ratings and reviews

Great satellite tracking app! Very concise and accurate. Easy-to-use. Nice user interface. Low impact on memory and Battery. Plus, and here's a big one, it has no ads everything you need to know about satellites is installed in this app. I consider it one of the best (if not the best) of its kind out there. It's a keeper and highly recommended.

Great! Needs a deselect all button added. Currently, you can select all satellites but you have to go through each and every one to deselect it. Otherwise, great app! *UPDATE* Dev mentioned a work around that didn't initially work. But it seems to work great now! Thanks for the fast response. (I'll keep it at 4 stars. That's not a bad thing. There's always room for improvement as you have shown in the past few updates)!

Has everything but what it most needs. A lot of amateur radio operators use yagi directional antennas mounted on a tripod. It would take seconds to mount the phone onto the end of the antenna. This would allow the use of the phone to aim instead of merely show the track it will take in the sky. Why the authors didnt put in 'push to' functionality like astronomy apps is beyond me. I'd gladly pay a few bucks for this functionality. Another thing I'd like to see is a search by satellite type. IE, FM repeater, linear, APRS, packet bbs etc.

What's new

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