Which programming language is best for app development

Answer 1

I am assuming you are talking about mobile apps.

In terms of performance and official support, Kotlin is best for Android and Swift for iOS.

For cross-platform apps you may use frameworks like Flutter(in Dart), React Native(in JavaScript) or Xamarin(in C#)

Answer 2

There is no best language for App development. Each programming language has its own strengths and weaknesses.

Usually, Android apps are written in Java, and more recently Kotlin, but web apps are developed using standard web technologies with a simple webview wrapper. However, web apps are not always suitable for every application. It's also possible to combine C/C++ with Android applications where speed is important or when porting an existing code base.

Developing anything more than a trivial app is difficult regardless of the language used. Your layout and fuctionality has to be able to cope with everything from a small smartphone screen to a 10" tablet. Oh, and users expect you to optimise everything for their device, fix bugs immediately and provide it all for free.