This is useful for broad goals but not so much for code quality. If you like this sort of thing I'd strongly advise adding SwiftLint to your project.
SwiftLint will check (lint) your code to check to make sure you're following general code and formatting standards and avoiding code smells like making functions or files too long, or using force casts to unwrap optionals. It can even analyze sections of code for complexity and advise you to break things up into smaller chunks when needed.
It's a valuable tool to have in your pocket if, as you say, you're a single developer and need another set of "eyes" on your code. Or if you're on a team and simply don't want your codebase to contain a dozen (or more) different formatting styles.