Roman Urdu is Urdu written using the Latin alphabet. If the script is new to you, it gives you a way to start reading and remembering phrases straight away.
You might see the same word spelled a few different ways. That can be confusing at first. Keep the spelling you learned with the phrase, and ask a speaker to say it for you if you’re unsure how it sounds.
Try saying the phrase while looking at both versions: Roman Urdu and Urdu script. You don’t have to read every letter yet. Just notice the shape of a word you already know.
In GupShup, Roman Urdu sits alongside the script and English meaning. You can use that support while you get familiar with the words. There’s no need to make learning the alphabet a condition for saying your first hello.