Xcode
Apple's official IDE for iOS and macOS.
AppFree
Apple's IDE for building iOS, macOS, watchOS and visionOS apps, with simulators, Interface Builder and Instruments. Runs on macOS only.
When to use
To develop iOS, macOS and other Apple platform apps; it is the official way to build, debug and publish.
When to avoid
For anything outside the Apple ecosystem, or if you don't have a Mac.
Related
From the same area, with a close purpose.
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