Pro Altimeter vs E6B Flight Computer

Pro Altimeter uses the high-fidelity barometric pressure sensor in iOS devices to measure and compute altitude. Pro Altimeter has a dead simple interface. Barometric altitude and GPS altitude are displayed in large easy to read numbers, showing units of both feet and meters, and giving realtime accuracy estimates from the hardware. At bottom are calibration and display mode buttons. The display offers a highly-readable daytime mode with black digits on an LCD-green background, and a reversed night mode that is easy on the eyes in dark conditions. That's it! Proper calibration is necessary to measure altitude from barometric pressure (this is why a pilot "dials in" the cockpit altimeter before taking off). Pro Altimeter offers four different methods for calibration -- choose the easiest and most convenient: 1. Use GPS altitude. This method correlates the measured local barometric pressure with the altitude measured by GPS. This method can be used when your device has a clear line of sight to the sky and a reliable GPS fix with good accuracy. 2. Manually enter altitude. This method correlates the measured local barometric pressure with known altitude from landmarks, elevation benchmarks, trail markers, topo maps, land surveys, etc. Altitude can be entered in feet or meters. 3. Manually enter pressure. If you have a weather station, weather report, or METAR report with equivalent sea level pressure for a nearby location, this can be used to correlate local barometric pressure to altitude. Pressure can be entered with units of inches Hg, kPa, or mb. 4. Check local airports. With the tap of a button, Pro Altimeter will locate the five closest airports within 100 miles (160km) of your present location anywhere in the world, and pull in METAR data. From that list of five, pick the airport of your choice and Pro Altimeter will import pressure data for calibration. Once calibrated, Pro Altimeter keeps track of the time since its last calibration. Because weather and local barometric pressure change over time, the app will warn you when 6 hours have elapsed since the last calibration by flashing the "CALIBRATE" button. You should calibrate as frequently as practical -- for example, on a hike, calibrate whenever you pass a trail marker or elevation benchmark. But at a minimum, calibrate at least every 6 hours or whenever weather changes in your area. Pro Altimeter is intended for iOS devices with a built-in barometric pressure sensor (iPhone 6 and later, iPad Air 2 and later, iPad mini 4 and later, and iPad Pro). On older devices without a barometric pressure sensor, only GPS altitude and accuracy will be displayed. If you have an Apple Watch, check out the new Pro Altimeter for Watch and get all this same functionality on your wrist!

The flight computer and the weather decoder in one app, paid for once. Foxtro is the E6B every student and private pilot does on the ramp and at the kitchen table, without the slide rule and without a subscription. Type in what you know and read what you need, offline, on iPhone and iPad. LIVE METAR AND TAF, DECODED • Search any airport in the world by ICAO, IATA or name, even without a connection • VFR, MVFR, IFR and LIFR at a glance, with wind, visibility, ceiling, temperature, altimeter and density altitude on one card • Every group of the raw report translated to plain English • The TAF on a timeline: each period in its own category colour, with a line where now is • Paste any raw METAR or TAF from anywhere and decode it offline • Favourite airports, cached for the ramp RUNWAY WINDS • The headwind and crosswind on every runway, worked out from the live report against each runway's true heading • The favoured runway, the gust and the worst case across a variable wind • The wind in magnetic too, the way the tower reads it PERSONAL MINIMUMS Set your own ceiling, visibility, wind and crosswind limits, or the ones in your solo endorsement, and every airport is checked against them: within or outside, and exactly why. E6B FLIGHT COMPUTER • The wind triangle: heading, ground speed and wind correction angle from course, TAS and the winds aloft, drawn as you type • Find the wind from what you actually flew • True airspeed from calibrated airspeed, pressure altitude and temperature • Pressure altitude and density altitude • Time, speed and distance, any one from the other two • Fuel burn, endurance and range • Runway headwind and crosswind components • Estimated cloud base from temperature and dew point • Conversions: knots, mph and km/h; nautical and statute miles; feet and metres; gallons, litres and pounds; inHg and hPa; °C and °F WEIGHT AND BALANCE Set up your aircraft from its own POH once — empty weight and arm, seats, baggage, fuel and the CG envelope — then load it for each flight and see the takeoff and landing points on the envelope. NIGHT AND DAY A dark cockpit look for before dawn and after dusk, and a Day mode that stays readable in full sun. PAY ONCE The calculators, the decoder and the runway winds are free. One purchase unlocks weight and balance, personal minimums, the TAF timeline and unlimited favourite airports with offline caching. No subscription, no ads, no account. Weather comes from the US National Weather Service's Aviation Weather Center; runway data from OurAirports. Foxtro is a planning aid, not a certified navigation or briefing source; always confirm with an official briefing before flight. Privacy policy: https://foxtro.vadapalas-zigmas.workers.dev/privacy Terms of use: https://foxtro.vadapalas-zigmas.workers.dev/terms