Clean code in mobile development

If a new engineer cannot describe the data flow after one walkthrough, the architecture is too clever. We keep layers boring: view, state, service.

Business logic lives outside the view layer, so it can be tested without a simulator. That single rule cuts regression bugs more than any process we have tried.

Every pull request answers three questions: what changed, why, and what could break. Senior review is not a formality — it is where most production bugs die.

When a screen becomes hard to extend, we refactor first and add the feature second. It feels slower for a day and pays back for the whole roadmap.