Why use Qt?

It's not hard to see why Qt stands a chance of winning against all other existing SDKs out there in the market; first of all, cross-platform compatibility. You can hardly find any other development kits that support so many platforms without writing different sets of code for each platform. By eliminating these extra steps, programmers can just focus on developing their applications without the need to worry about the implementation of each and every platform-specific feature. Furthermore, your code will look clean without all the #ifdef macros and having to load different dependencies for different platforms.

Qt generally uses C++, which is a compiled language that generates small and efficient code. It is also well documented and follows a very consistent set of naming conventions, which reduces the learning curve for the developer.

Do be aware that Qt does include a small amount of features that only work on specific platforms. However, these are minimal and often for special use cases, such as Qt Sensors, which only work on mobile platforms; Qt Web Engine, which only works on desktops; Qt NFC, only for Android and Linux; and so on. Those are some very specific functionalities that only exist on certain platforms that support them. Other than that, common features are usually supported on all platforms.