Android
A mobile operating system designed for touchscreen devices, with over 3 million apps available through Google Play.
iOS
A mobile operating system designed by Apple for iPhones and iPads, with over 2 million apps available through the App Store.
Flutter
An open-source UI SDK created by Google and used to develop cross-platform apps for Android, iOS, Linux, macOS, Windows, and Google Fuchsia from a single codebase.