osmandapp/OsmAnd
OsmAnd
OsmAnd is a mobile navigation application and vector map viewer that uses OpenStreetMap data to provide offline map access, turn-by-turn routing, and geospatial tools. It functions as a mobile routing engine and a GPX track recorder, allowing users to navigate and record movement without an active internet connection.
The project integrates a mobile interface for contributing to the OpenStreetMap project, enabling users to report map errors and add new points of interest directly from their devices. It also includes a system for visualizing satellite imagery and custom tile overlays on top of local vector data.
The application covers broad geospatial capabilities including location search via coordinates and addresses, trip telemetry recording for altitude and movement, and driving safety monitoring with speed limit alerts.
Features
- Local-First Storage - Employs a local-first storage architecture to enable full map navigation and searching without internet access.
- GPS Path Tracking - Records and visualizes movement paths using satellite positioning for outdoor activities.
- Turn-by-Turn Navigation Guidance - Provides detailed textual and verbal turn-by-turn guidance for driving and walking routes.
- Routing Engines - Implements a routing engine that calculates optimal paths using specific costing models and map data.
- User and Location Search - Provides discovery of geographic locations and points of interest via street addresses and coordinates.
- Spatial Indexing - Uses spatial indexing to organize points of interest for efficient retrieval of nearby locations offline.
- Slippy Map Vector Renderers - Provides a slippy map vector renderer for smooth zooming and panning of geographical features from local binary data.
- Offline Map Tile Renderers - Renders map tiles from local storage to enable navigation without an internet connection.
- Offline Mapping Applications - Offers a complete offline mapping and navigation experience without requiring an active internet connection.
- OpenStreetMap Applications - Integrates turn-by-turn navigation and map viewing using OpenStreetMap data for offline use.
- Route Calculations - Calculates optimal driving and walking paths between geographic coordinates using a weighted road network graph.
- Driving Safety Assistants - Displays current speed limits with exceedance alerts and provides day/night visual modes for safer driving.
- Collaborative Database Contributions - Enables users to upload bug reports, points of interest, and GPX tracks to a community-maintained map database.
- Map Data Contributors - Provides a mobile interface for reporting map errors and adding points of interest to OpenStreetMap.
- Map Data Error Reporting - Allows users to report inaccuracies and add new points of interest to the OpenStreetMap database.
- Interactive Map Overlays - Renders interactive map tiles with overlaid GPX track paths and satellite imagery.
- Raster and Vector Tile Renderers - Renders satellite imagery and custom raster tiles as overlays on top of vector map data.
- GPX Track Loggers - Records GPS tracks during activities and exports them in the standard GPX format.
- Track Recorders - Implements background GPS coordinate logging to create recorded paths that persist during system sleep.
- Telemetry Recording - Records movement and altitude telemetry to local files or cloud services during trips.
- Mobile Maps - Offline map viewing and navigation for mobile.
- Maps and Navigation - Comprehensive offline map and navigation tool using OpenStreetMap data.
