Progressive Web Apps (PWAs) can provide app-like experiences directly through the web. PWAs offer advantages over traditional mobile websites like better user engagement through features like push notifications, the ability to work offline through caching, and feeling instantly loaded during repeat visits. The WordPress Mobile Pack framework allows building PWAs on WordPress that combine dynamic content delivery with separate app themes and URLs, using the WordPress REST API to serve content to both desktop and mobile users. The framework provides starter kits for setting up PWA development environments integrated with WordPress to build multiple app themes with similar features using a single API.