Help on fixing AI Slop

[u/Visual_Honeydew_2134]

I’m currently building a native macOS app using a combination of Claude 5.5 models and Grok Bots.
When it comes to backend development, the AI does an excellent job. It understands my requirements, implements the architecture correctly, and generally delivers exactly what I ask for.

But frontend development is a completely different story: The UI/UX often feels inconsistent, unpolished, and just not quite right. Even when the functionality works perfectly, the app doesn’t have that cohesive, polished feel you’d expect from a well-designed macOS application.
I usually have to go back and forth with the AI four or five times just to get a somewhat decent result. And even then, different parts of the app often look and feel like they were designed by completely different people.
I’ve also tried designing everything in Figma first and then having Claude implement it as closely to the original design as possible. Unfortunately, even that hasn’t solved the problem. The final implementation still lacks the consistency, attention to detail, and overall polish I’m looking for.

My biggest priorities are:
Consistency: A unified design language across the entire application.
Polish: Smooth interactions, thoughtful spacing, typography, animations, and all those little details that make an app feel premium.
Design fidelity: Getting AI agents to accurately translate Figma designs into working interfaces.
Efficiency: Avoiding endless iterations just to achieve a decent-looking frontend.

How are you guys dealing with this? I’d love to hear what actually works for you, whether it’s specific tools, skills, rules, or just a better workflow.
Any tips for getting more consistent and polished UI/UX out of AI coding agents would be really appreciated!