PD Altitude vs Geoid Altimeter

If you struggle to work out PRESSURE and DENSITY altitudes then this simple calculator is for you. Simply slide 'Choppy' up and down to set your height and move the pressure and temperature sliders and the calculator will deliver the answer. For added accuracy, you can even type the numbers in from your keyboard! If you want to support the developer there is an In-App purchase that will enable automatic calculation based on your current location. Cool eh? ARE YOU TRAINING TO BECOME A PILOT? PD Altitude also has a small training section giving you an easy 5-Step process for calculating your altitudes. Enjoy this version and feel free to leave a comment in the review if you found this useful. For the Terms of Use (EULA) for this application please refer to Apple's Standard Licensed Application End User Agreement at: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ View PitchLinks terms & conditions and privacy policy: https://www.pitchlinks.co.nz/privacy

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/