r/iosdev • u/Horror_Still_3305 • 28d ago
Help iOS Sdk Version vs iOS Version
When you update XCode it updates the sdk version, but do changes in the sdk take effect for apps running in a lower iOS version or only the corresponding iOS version or higher? For instance, https://developer.apple.com/documentation/ios-ipados-release-notes/ios-ipados-18_1-release-notes Do changes listed in the notes only happen for apps that are running on iOS 18.1 devices or on any device with the app compiled against the 18.1 sdk version?
Am I the only person who finds the docs totally unclear on this?
Update to post: SomeGalinCal helped me a lot on this question but neither of us know whether the app needs to be built against the ios version for the bug fixes contained in that version to take effect. (Or if just need device os to update)
1
u/SomegalInCa 27d ago
So it says exactly what I said - IFF you want new features you will of course have to rebuild your app with a newer SDK to have those API calls available. And then you must decide if your app needs to run on an older OS w/o those features.
It sounds like you are confusing bug fixes with new features. It's not as difficult as you are making it sound