I think for many apps out the codebase is dominated by UI code, and the business logic part is small and relatively easy to write anyway. From personal experien

I think for many apps out the codebase is dominated by UI code, and the business logic part is small and relatively easy to write anyway. From personal experience, sure, I have some classes that abstract away server APIs and some classes for data models. But most time and sweat goes into getting the UI to look good and performant on different devices. Say, for an app like Timely [1] which I'm a fan of, I would think the data models for timers and alarms are trivial, and the code for all the subtle animations is where all the meat is. [1] https://play.google.com/store/apps/details?id=ch.bitspin.timely https://play.google.com/store/apps/details?id=ch.bitspin.tim...