Geoid Altimeter vs GPScope

Geoid Altimeter is an elevation tracking tool built for field professionals. It applies high-precision geoid models to your smartphone's GPS ellipsoidal height to display a practical "orthometric height" (elevation above mean sea level). Try all features completely free for the first 30 days. Experience the convenience directly on your smartphone. [ Key Features ] - Orthometric Height (H = h − N): Converts the raw GPS ellipsoidal height using national or global geoid models. - High-Resolution Elevation (DEM): Reads terrain elevation for your current location or any pinned point — no need to physically stand there. - Pin & Address Search: Drop a pin or search an address to check the elevation anywhere on the map. - Favorites & CSV Export: Save sites with custom names and export all values (h, N, H, DEM) as CSV. - Model Comparison: View your local model alongside the global EGM96 reference. - One-Tap Copy, Screenshot Share, Transparent Satellite/OSM Overlay, and Compass. [ Supported High-Precision Regions ] Geoid models (orthometric height correction): Japan (Geoid 2024 / GSI), United States (GEOID18 / NOAA-NGS), Canada (CGG2013a / NRCan), New Zealand (NZGeoid2016 / LINZ), Switzerland (CHGeo2004 / swisstopo). High-resolution elevation (DEM): Japan (GSI, 5 m laser mesh), United States (USGS 3DEP), Switzerland (swisstopo), France (IGN RGE ALTI, 1 m). For every other country and region, the app provides seamless worldwide coverage using the global EGM96 geoid and global terrain-elevation data. [ New in 1.4.0 ] - Works beyond coverage: pre-load the national geoid model around you, and elevations stay on that model when the network goes. - Always says which model answered — the national service live, a value saved nearby, or the global EGM96 standing in. - Stand-still averaging: hold still and get a mean with its spread, instead of a single fix that scatters by metres. - Antenna height: set the pole length or how high you hold the phone, and it is subtracted from every GNSS height. - Height difference and grade (% and 1:n) between two saved points, a one-page PDF elevation record, and NGVD29 readings for US drawings levelled before NAVD88. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

GPScope turns your iPhone into a clear, real-time GPS instrument for hiking, cycling, travel, and everyday exploration. See essential location and sensor information in one beautifully designed dashboard. Check your current altitude and speed, follow your compass heading, view latitude and longitude, understand GPS accuracy, and monitor atmospheric pressure and relative altitude on supported devices. KEY FEATURES • Live altitude and movement speed • Latitude and longitude coordinates • Compass heading with an easy-to-read dial • Horizontal and vertical GPS accuracy • Atmospheric pressure and relative altitude • Flexible units for length, speed, and pressure • Metric and imperial measurements, plus knots • Light and dark appearances • Custom dashboard backgrounds using your own photos • Option to hide coordinates from the dashboard • Interface available in 12 languages BUILT FOR QUICK READING Large numbers, clear labels, smooth updates, and a focused layout make GPScope easy to check at a glance—whether you are outdoors, on a trip, or simply curious about your surroundings. FLEXIBLE UNITS Choose meters, feet, kilometers, or miles for length; km/h, mph, knots, or m/s for speed; and kPa, hPa, mmHg, or inHg for pressure. You can also follow your device’s regional settings. PERSONALIZE YOUR DASHBOARD Switch between light and dark appearances, or select a photo to create a dashboard that feels like your own. You can also hide latitude and longitude whenever you prefer a cleaner or more private display. No account is required. GPS and sensor readings depend on your device, surroundings, and signal quality. Pressure and relative altitude require supported hardware. GPScope is intended for general informational use and should not be used for aviation, surveying, emergency response, or other safety-critical purposes.