The build process is significantly better in Android world once you actually take a look at how the build process works and need to start doing automated testing and deployment. Xcode tools for actual continious development beyond manual clicking are horrendous and waste a huge amount of people hours.
There's third party solution for iOS build automation - https://fastlane.tools. I didn't tried the whole end-to-end solution, but pieces I tried worked very well.
Unfortunately, the support for managing code-signing in Fastlane isn't quite fully-baked, and it can get messy. It's still really useful, though, if you have to deal with iOS builds.
We used that, but sadly it doesn't help with CI, constant simulator / connected device issues and breakages in toolchains when Apple releases new Xcode :(
