The summarised flutter doctor output given by flutter create is grammatically dubious:
[✓] Flutter is fully installed. (on Mac OS, channel master)
[✓] Android toolchain - develop for Android devices is fully installed. (Android SDK 24.0.3)
[-] iOS toolchain - develop for iOS devices is partially installed; more components are available.
[x] Flutter IDE Support is not installed. (No supported IDEs installed)
[✓] Connected devices is fully installed.
Only the first of these actually makes sense. The others are quite confusing.