How Apple's software engineering teams manage and test new operating system features ahead of launch

Internally, Apple engineers rely on a dedicated app to view, manage, and toggle in-development features and user interface elements within pre-release versions of new operating systems. Here's what the app is called and what it can do. Livability is an internal app used by Apple engineers to manage new features An essential internal-use application known as Livability lets the company's software engineers keep track of individual operating system features and test devices as a whole. It can be f...