The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From Darren Gates:
This app consists of 9 simple, weather-related calculators. The calculators include:Cloud AltitudeCloud BaseCycloneHeat IndexLightning DistanceRain HarvestRoom Air ConditionerWind ChillWind Power