The coprocessor M8 iPhones 6 and 6 Plus came with a cool new feature: a barometer, instrument used to measure atmospheric pressure. It already works in the Sade app (Health), but can be explored in a variety of ways by third-party developers.
Jackson Myers decided to create a free app that shows data from the barometer in real time, the Barograph.
Right when you open Barograph on an iPhone 6/6 Plus, the barometer data is shown immediately on the screen numerically and in a graph. Pressure can be shown in kPa (kilopascals), mbar (thousandths of bar) or inHg (inch of mercury), while the relative height, in meters or feet. All data can be easily shared via email, iMessage, Facebook or Twitter.
The free Barograph, supported by iAds, but whoever wants can make an internal purchase to remove their advertisements.