Display a floating arrow indicating the direction to Sagittarius A, the supermassive black hole at the center of the Milky Way. Update direction based on time of day, location, and Earth's orbital position.
by Acts Not Facts Ltd★ 4.865 ratingsTravelFreeData updated 2026-09-06
Calculate routes and determine points on Rhumb Line, Great Circle, and WGS84. Compute average speed and estimated time of arrival. Plan routes with manual waypoints and create waypoint routes. Support composite sailing calculations.
Calculate Course to Steer and Speed over Ground using heading, boat speed, current set, and drift. Input Magnetic Variation for True and Magnetic compass readings. Visualize heading, current vector, and course on a 360º compass.
Configure sailboat performance settings from 2-20kn and set start line, wind direction, and intensity. Track real-time GPS data during races and record performance continuously in the background.
Navigate with marine and outdoor offline. Overlay satellite and terrain data on charts. Access local weather forecasts. View worldwide and satellite imagery when connected. Use NOAA raster data for detailed navigation.
The app looks up any latitude/longitude coordinate on the earth's surface and displays it on a satellite image or map. It is useful for finding a location specified only by its coordinates or to map out a SIGWX area.
Record journeys without an internet connection. Track distance, elevation, and detailed statistics. Save locations for navigation. Review routes and monitor progress without requiring mobile service.
The app displays nearby points of interest such as gas stations, restaurants, and banks. It shows a compass on the map and provides routes to selected destinations.
The app locates the closest Citi Bike docking station, showing distance, direction, and availability of bikes and docks. Users can view a map and set a ride timer to track rentals.
The app displays sun and moon trajectories, age, and rise/set times. Users can view this information for arbitrary days at their current location or on a world map.