What is step by step cources to learn design app like tiktok

Question

Just tell me courses to learn

Answer 1

You need sufficient knowledge in Java for an Android app, as Android apps are made in Java.
For IOS, you'll need to have some knowledge in swift to make IOS apps.
So consider taking Swift or Java to learn how to design apps like those.

Answer 2

Java is enough for that sir ?

Answer 3

For Android, yes, you should learn java.