I am that kind of mobile app developer (React native) who loves precision and accuracy at a micro level when I work on apps, Say it's a reusable component that needs adjustments or a good ol' fashion "View" that needs centering or even an API that needs consumption with proper error handling and state management, I take my time and I do it right whilst keeping to project deadlines and shipping features on time because I apply an array of past or previously gained knowledge from experiences in solving present or future problems.