Weather Calc vs Heat Compass

If you’re a pilot, you often need to make lots of weather related calculations. Now there’s an easy solution, as close as your iPhone. Weather Calc performs the following weather relation calculations: Altimeter Setting - compute the altimeter setting based on elevation and station pressure Cricket Temperature - just for fun! This lets you estimate the temperature based on the chirp rate of a cricket Heat Index - compute the heat index based on the temperature and relative humidity Pressure - convert between hPa, atmospheres, psi, and inches and mm of mercury (Hg) Relative Humidity - compute the wet bulb and dewpoint based on the temperature, pressure, and relative humidity Speed Of Sound - displays the speed of sound in various units, given the temperature Standard Atmosphere - compute the temperature, pressure, density, viscosity, speed of sound, and more Station Pressure - compute the station pressure based on the elevation and altimeter setting. Temperature - convert between degrees Fahrenheit, Celsius, Kelvin, and Rankine Virtual Temperature - compute the virtual temperature based on the temperature, dewpoint, and pressure Vapor Pressure - com[ute the saturated and actual vapor pressure, as well as relative humidity Wet Bulb - compute the dewpoint and relative humidity based on the temperature, pressure, and wet bulb reading Wind Chill - compute the wind chill based on the temperature and wind speed Wind Speed - convert between knots, kilometers/hour, meters/second, miles/hour, feet/second Buy your copy now, and let Weather Calc take the drugery out of weather related calculations.

Heat Compass turns the official military heat-flag system into a personal heat-safety coach. It computes WBGT (wet bulb globe temperature), the standard used by the U.S. Marine Corps and occupational safety programs, from live weather for your location, then tells you plainly what the conditions mean and what to do about them. KNOW THE FLAG - Live WBGT and the five-color heat flag (White, Green, Yellow, Red, Black) for where you are right now - Work-rest guidance for each flag: how long to work, how long to cool down - 7-day forecast with heat flags, so you can plan the week - Nearby weather stations, and transparency about which station your reading came from STAY AHEAD OF DEHYDRATION - A daily water goal derived from the heat, your activity level, and optionally your body weight - One-tap drink logging with reminders that adapt to the heat flag - An "I'm outside" mode that tightens reminders while you are exposed - Track drinks for family members or a work crew with household tagging - Guidance is capped at safe intake rates, because drinking too much is also dangerous GET WARNED EARLY - Proactive heat-risk alerts: the app periodically checks conditions and warns you when the flag climbs, even when the app is closed - A pavement heat check that estimates surface temperature, useful for dog owners and hot-surface work PRIVATE BY DESIGN No account and no sign-in. Your hydration log, profile, and settings stay on your device. Your location is used to fetch weather for where you are and is not stored on our servers. No ads, no tracking, free. A NOTE ON SCOPE Heat Compass provides general heat-safety guidance based on published heat-stress doctrine. It is an aid for planning, not a medical device, and it does not replace occupational safety programs, OSHA requirements, or your own judgment.