This is a basic android + iOS quiz mobile app coded in Dart(Flutter)
Flutter is an open-source UI software development kit created by Google. It is used to develop applications for Android, iOS, Windows, Mac, Linux, Google Fuchsia and the web from a single codebase. The first version of Flutter was known as codename "Sky" and ran on the Android operating system.
With this we can code for both OS (Android +iOS) with a same language which is Dart Try this App and if you think to upgrade it, Pull req are welcome!