While responsive sites were the first step to allow websites to suit mobile devices, Progressive web apps have gone a few steps ahead for mobile websites and apart from faster responsiveness for mobile websites, they offer advanced functionalities such as faster load speed and caching, offline usability, improved security, easy installation with just the link, accessibility irrespective of the browser, and can be used for push notifications to re-engage with customers. Overall, while PWAs are more expensive, they come with the aforementioned functionalities that are perfect for online bookings and transactions, and better for mobiles.