Open Source Kotlin Mapping Software

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.

NeoStumbler is an Android application for mapping wireless infrastructure and contributing measurements to geolocation databases. It collects geographic observations of cellular towers, Wi-Fi access points, and Bluetooth beacons. Users can submit collected information to Ichnaea-compatible services such as BeaconDB. An interactive map visualizes recorded measurements and helps identify areas with limited coverage. Battery-saving features include passive scanning and motion detection that pauses active scanning when the device is stationary. Privacy controls help reduce sensitive metadata in collected records. Data can be exported to CSV or SQLite for further analysis. NeoStumbler supports Android 10 and newer with a modern Material 3 interface.

GeoShare is a free, open-source Android application that simplifies sharing locations between different mapping services. It converts map links into geographic coordinates that can be opened in other installed navigation applications. Supported services include Google Maps, Apple Maps, OpenStreetMap, Waze, OsmAnd, and Organic Maps. Users can copy coordinates in different formats or save locations as GPX files. The application also supports place lists, contact integration, and sharing through messaging apps. Navigation can be launched directly in compatible applications, including TomTom. GeoShare processes links offline whenever possible and requests permission before accessing online services. Additional options support custom web maps and automatic actions.

Map location picker component for Android. Based on Google Maps. An alternative to Google Place Picker. Component library for Android that uses Google Maps and returns a latitude, longitude and an address based on the location picked with the Activity provided. Note that you have the voice_search_extra_language that is used for the language of the voice recognition. Replace it with the allowed voice recognition locale for your language. We encourage you to add these languages to this component, please fork this project and submit new languages with a PR. It's possible to hide or show some of the information shown after selecting a location. Using the bundle parameter LocationPickerActivity. You can change the visibility of the street, city or the zipcode. By default the search will be restricted to a zone determined by your default locale.

Transportr is an open-source Android application designed to simplify public transportation navigation while protecting user privacy. It helps passengers plan journeys, discover transit connections, and navigate public transportation networks across supported regions. Users can search for destinations and receive routes with transfer instructions and estimated arrival times. The application displays transit stations and complete journeys on interactive maps. Live departure information provides upcoming service schedules and real-time delays where available. GPS integration identifies nearby stations and tracks progress throughout a journey. Frequently visited locations and routes can be saved for faster access. Developed as a nonprofit project, Transportr operates without advertising or user tracking and encourages community contributions.