The bundle of “C++ and Qt” saves a lot of time and money, helps to get your product to market in a short time. The final applications are binary and thuswise fast as they are written in a native Integrated Development Environment (IDE).
The cross-platform development has one vulnerability. It is the framework itself that is used for development. If such framework is bad a project will be bad. Thus, it is critically important to use a sustainable and time-proven solution.
Augmented reality enhances one’s current perception of reality, whereas in contrast, virtual reality replaces the real world with a simulated one. Mobile VR is VR that is using a mobile phone as the primary viewing device (display), often with a headset like Google Cardboard or others.