Coming from embedded development, where it's mostly crappy SOC vendors providing a barely-working SDK and toolchain they cobbled together from an ancient version of gcc, moving to iOS development / Xcode was in most aspects a breath of fresh air. It does have its annoyances, though. Code signing, provisioning profiles, entitlements, AppStore wizardry... And the developer program fee is a bummer: It means you can't sustainably release free apps unless you're willing to just ignore that you're burning $100 a year forever.
Other frustrations: Apple makes it difficult to maintain support for older devices. They insist you keep updating your tools, but the updated tools tend to drop support for older SDKs and devices. You have to kind of go out of your way to keep your app targeting them. You can see how this plays out by getting a second hand iPhone 7 today and go to the AppStore looking for apps. It will be very difficult to find an app that will run on it. This phone is not that old, but the ecosystem abandons you pretty quickly.
They also deprecate things like crazy, so every time you update your tools, you get more warnings about APIs Apple would rather you stop using. It's tough to just write an app once in 2016 and keep it limping along forever. They clearly favor developers who are 1. doing it for a living, 2. targeting latest and greatest devices, 3. updating their app and their tools frequently, and 4. don't mind doing surgery every year to move away from deprecated stuff.
Other frustrations: Apple makes it difficult to maintain support for older devices. They insist you keep updating your tools, but the updated tools tend to drop support for older SDKs and devices. You have to kind of go out of your way to keep your app targeting them. You can see how this plays out by getting a second hand iPhone 7 today and go to the AppStore looking for apps. It will be very difficult to find an app that will run on it. This phone is not that old, but the ecosystem abandons you pretty quickly.
They also deprecate things like crazy, so every time you update your tools, you get more warnings about APIs Apple would rather you stop using. It's tough to just write an app once in 2016 and keep it limping along forever. They clearly favor developers who are 1. doing it for a living, 2. targeting latest and greatest devices, 3. updating their app and their tools frequently, and 4. don't mind doing surgery every year to move away from deprecated stuff.