It’s been called the Twitter killer and already been downloaded by millions.

But Mark Zuckerberg’s newly launched Threads app is out to reach a billion users in its bid to topple tech rival Elon Musk’s tweeting platform.

So how does the app work? Are you safe to use it? And is it true that once joined you can really never leave it?

Our tech-savvy Entertainment Reporter Rishi Davda tells Shehab Khan what you need to know…