App Development for Android and iPhone

Question

I was wondering, if I want to make an social media app and make it crossed-platform between Android and iOS, and also make it into a web application, what languages would you use for the UI and the back-end?
I'm not sure how exactly that would work, would I need to write in one language for both platforms (like would C# function in both devices) or would they be different languages between the Android and iOS app? (would I need to write in Java for Android and another language for iOS)
Also, what IDE would you consider/recommend making it on?

Answer 1

Well, you use android studio which supports languages like java and kotlin for only android apps. On the other hand, use Xcode for ios applications. It supports c objective and swift.
Those are the ones that are normally used as they are encouraged by google and apple respectively.
You could, however, write an hybrid app. Dive deep into this topic. Briefly, you can write apps with languages like javascript, html.
I hope it helps

Answer 2

Well, you use android studio which supports languages like java and kotlin for only android apps. On the other hand, use Xcode for ios applications. It supports c objective and swift.
Those are the ones that are normally used as they are encouraged by google and apple respectively.
You could, however, write an hybrid app. Dive deep into this topic. Briefly, you can write apps with languages like javascript, html.
I hope it helps