Flutter vs Delphi

Qt is a good choice for businesses that want to build software for several platforms or target both Android and iOS users.

Flutter is a mobile app SDK to help developers and designers build modern mobile apps for iOS and Android ; Qt: A leading cross-platform application and UI framework. Qt, a leading cross-platform application and UI framework.

Yes, Qt is good . It’s in the process of becoming better. Qt came about early in the C++ language evolution. It had to solve many of the problems now partially solved by the STL (Standard Template Library).