What language to use for the mobile app?

Question

Mobile development

It is necessary to create a mobile application with functionality: take a photo, create collages from photos, save photos and collages by category, filter photos and collages by category, in the future you will need to add the function of separating the background from the photo. Mobile application for iOS and Android. What programming languages ​​are best to use? Is it worth it to use cross-platformers?

Answer 1

For iOS - Objective-C, Swift
For Android - Java
Cross-platform development - Xamarin in C#
https://habrahabr.ru/post/227863/ - about the pros and cons of Xamarin development

Answer 2

Is it worth it to use cross-platformers?

Only if the budget is pressed very hard, the result will be mediocre.

Answer 3

as an option, you can also look at kivy

Answer 4

See also React Native