Look4Sat: Satellite tracker APK

Look4Sat: Satellite tracker

Overview

• Look4Sat is a mobile satellite tracking application designed for amateur radio operators, weather satellite enthusiasts, and space observers to monitor orbital passes.

Database and Search Capabilities

• Integrates Celestrak and SatNOGS databases to provide access to over 9000 active orbital satellites.

• Supports searching the database by satellite name or unique NORAD Catalog Number.

• Allows custom satellite integration via Three Line Element (TLE) data import using .txt files.

Pass Prediction and Monitoring

• Predicts orbital passes and coordinates up to 10 days in advance based on observer location.

• Displays a chronologically sorted list of currently active and upcoming satellite passes.

• Provides real-time tracking data, including active pass progress, polar trajectory, and transceiver frequency details.

Mapping and Visualization

• Features an interactive map showing the satellite's current position, footprint, and ground track.

• Calculates precise local pass details, which require users to configure their specific station coordinates in the application settings.

Offline-First and Privacy

• Performs all orbital calculations locally on the device without requiring a constant internet connection.

• Recommends a simple weekly TLE data update to maintain calculation accuracy.

• Completely open-source and guaranteed to remain free of advertisements.

Technical Architecture

• Built with modern Android development practices.

• Developed using Kotlin, Coroutines for asynchronous operations, Jetpack Compose for the user interface, and Jetpack Navigation.

FAQ

Q: Where does Look4Sat source its satellite database from?

A: The app integrates data directly from two reputable sources, Celestrak and SatNOGS. Together, these databases provide users with access to tracking information for over 9,000 active orbital satellites right out of the box.

Q: How can I search for a specific satellite within the app?

A: Locating a satellite is straightforward. You can search through the extensive database either by typing in the satellite's common name or by searching directly using its unique NORAD Catalog Number.

Q: Is it possible to import custom satellite data into Look4Sat?

A: Yes, Look4Sat allows you to integrate custom satellites that might not be in the default database. You can import custom satellite orbital data by importing Three Line Element (TLE) text files directly into the application.

Version History

v4.4.7——21 Sep 2026

Satellite tracker and pass predictor for Android Download the latest version of Look4Sat: Satellite tracker to enjoy new features and updates immediately!

*4.4.7

* Tweaked sun calculations, added tests by atsunatsu (#241)

* Overhauled sources import, added HTTP status by wty2019wty (#242)

* Localized AMSAT status screen for Chinese by atsunatsu (#245)

* Extracted hardcoded UI strings to resources by TianhengZhuang (#247)

* Added AMSAT satellite status reports submission by atsunatsu (#248)

*4.4.6

* Added AMSAT status tracking page by MCKero6423 (#234)

* Tweaked Radar track on reposition by atsunatsu (#235)

* Tweaked linear transponder calc by atsunatsu (#236)

* Added saving per-sat doppler offset by atsunatsu (#237)

* Added custom freq offset setting to network reporting

* Added ability to customize data sources via import

* Fixed star chart in README by PingouinFerreux (#240)

*4.4.5

* Added ARISS source, tweaked SSTV sensitivity #225

* Implemented AOS window and elev filter #226

* Added cleartext traffic support for TLEs #227

* Fixed OMM import, tweaked error messages #228

* Added support for Icom CAT by ruilvo #229

* Added tweakable Radar offset by qwqtoday #230

* Localized date/time formats by atsunatsu #231

* Added linear radio Doppler calc by atsunatsu #232