Mobile-first online casinos are designed to work smoothly right in your browser...

https://lanesmasterchat.cloudhinter.com/posts/why-does-a-mobile-casino-feel-smoother-after-an-update

Mobile-first online casinos are designed to work smoothly right in your browser using HTML5, so there’s no need to download apps. They load faster and have touch-friendly layouts that make it easy to play on the go