Density Altitude & Air Density

WIDGETS, LOCK SCREEN AND APPLE WATCH Your featured value — density altitude, RAD or air density — on the Home Screen, the Lock Screen and your watch face, always with how old the data is. During a session it is also a Live Activity on the Lock Screen and in the Dynamic Island. ALERTS WHEN CONDITIONS CHANGE Turn them on for a session and the app tells you when air density moves by your threshold since the first reading, with the new density altitude. Forecast-based alerts arrive even with the app closed. CARBURETOR ICING A warning from temperature and dew point on the chart used in civil aviation, read for a ground engine at full throttle or for an aircraft, as you choose. BIG READING Your value full screen, high contrast and full brightness, to read at arm's length. SHARE A READING By link, file or QR code, with nothing personal in it. Without the app, it opens in the browser. ICLOUD Your sessions and settings on all your devices. ALSO • The app now opens in your iPhone's language. • On iPads without GPS and indoors, the app no longer waits forever for a position. • Altimeter setting (QNH) fixed: it is now computed from station pressure. • Report a problem from inside the app. IN EARLIER VERSIONS 2.1 — Complete rebuild: the iPhone barometer, session logging with chart and CSV, 4 dyno correction standards, wider ranges, grains per cubic foot, dark mode and iPad.