View real-time river gauge data for specific locations along the Upper Mississippi River. Monitor water levels, flow rates, and historical trends. Receive alerts for significant changes. Share data with other users or save for later reference.
by Timothy Johnson★ 5.03 ratingsNavigationFreeData updated 2026-09-06
Find nearby fuel stations, charging points, and car washes with real-time pricing and price change alerts. View current fuel, charging, and washing costs. Save favorite locations and navigate to them using integrated maps.
Navigate indoor spaces using wayfinding and routing features. View real-time location data and share positions with others. Access maps and directories to locate facilities and services. Track movement and receive directions within buildings.
Track with GPS-based real-time analytics. View current , historical data, and location markers. Set limits and receive alerts when exceeded. Export data for review and share results.
Study Navigation with over 1,200 practice questions covering Inland and International waters. Topics include Steering & Sailing , Lights & Shapes, and Sound Signals. Each question has detailed explanations.
Track solar wind and sun/moon data to predict visibility. Set locations and receive alerts for optimal viewing times. Report sightings to update other users. View historical activity maps and weather conditions.
Navigate using augmented reality for real-time directions. Access zoomable maps for any region. View interactive points of interest including public transport, restaurants, and hospitals. Find shopping locations, nightlife spots, and city tips.
The app provides information for London Underground, Overground, and Docklands Light Railway stations. It includes exit door positions, 3D station maps, and accessibility details.
Visualize seabed types including sand, Posidonia, coralligenous, and rock. Access port information, maritime regulations, and diving sites. Book mooring buoys for secure anchoring. Track anchoring locations and monitor seabed conditions in real time.
The app provides daily dam and catchment levels for Melbourne. Users can view storage levels, catchment rainfall data, and daily water usage information.
Variometer+ provides real-time altitude and ground speed data with sea level and relative to take-off readings. It includes a sink alarm and customizable gauges. Users can adjust units and configure settings that sync across devices via iCloud.
Track train routes with GPS-guided audio commentary and real-time map positioning. View photographs and text at waypoints every mile. Switch to manual mode for off-train navigation or adjust playback.
Track real-time wave height, off-shore and near-shore conditions, and safety alerts. View imagery and surf forecasts. Receive notifications for changing weather patterns. Share data with friends or save reports for later reference.
The app provides self-guided walks with city maps, featuring attractions and hidden gems. Users can explore at their own pace without needing a data plan or internet access.
Provides real-time , atmospheric pressure, latitude, and longitude data. Users can switch between GPS and device altimeter for readings. Camera integration allows photo capture with location data overlay.