Marine Barometer

Just started looking at this app. Just on the basis of the detailed info it contains, the references it lists and the potential it affords with incredible ease, the publisher should be greatly admired and complemented. App is very well designed and explained and brings this data and science within easy reach of even the more casual user. Many kudos!

I have never taken the time to review an app before, but I am so pleased with this one that I had to stop and write one. My wife and I are offshore sailors, and I’ve been looking for a really accurate barometer for about a year. I really accurate barometers are really expensive, so I hoped to make do with an iPhone app. I think I have most of them, at this point, but this is the first one that ticks all the most important boxes. First, it’s not a black box with hard to understand calibration parameters. It has exactly two, and they are the two obvious and critical ones: altitude and sensor offset. These are the only two required for accurate readings, so I’m not sure why other apps have more. This is a case where more is not better. Second, it averages the readings. The sensor in the iPhone is pretty jittery so averaging is absolutely necessary. The result is a simple, accurate barometer that — I hope — will stay accurate over a goodly period of time. I haven’t used it long enough to know if it drifts over time, but I guess that would be the fault of the sensor, not the app. I intend to track its accuracy over time, with the hope I don’t have to buy one of those $700 barometers! Well done.

Straight forward and nicely organized for the sailor. I can now compare my ships barometer to the barometer in my iPhone