Besides its extensive collections of add-ons for Android, Firefox's mobile browser apps have many built-in features that you won't see in other mobile browsers. One feature in particular, available for both Android and iOS versions, makes it easy to switch back and forth between search engines for any query.
There are over 3 million apps in the Google Play Store, all optimized for the small screen in your hands. While that number sounds staggering, there are still many online tools and websites that require you to use a mobile browser since app development is expensive. However, that's where Progressive Web Apps (PWAs) come into play, a cost-effective way to turn websites into mobile apps.