Hi Rowland!
I hope you are well!
Sorry about the app requiring iOS 17.
Current market surveillance on my 26 apps in the store
shows me that roughly 90% of current users are already
upgraded, and that fraction is climbing.
Most of my apps have a minimal requirement of iOS 14,
but for this newly written app I chose to use the new
Apple programming language called SwiftUI. It was
a bit of a struggle to learn and it has more stringent
requirements in terms of what it will run on. It has a number
of advantages in developing the user interface, supporting
different devices and screen sizes with fewer programming
errors.
I did have a previous generation of the this App in the old
Apple language of Objective C which ran on iOS 12, but
the National Weather Service data source it used was
discontinued, so I removed it from sale and started over.
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Ira N224XS
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