Which is the real ChatGPT app?

I've been hearing a lot about the ChatGPT app recently, but I'm not sure which one is the real one. With so many imitators and fake versions popping up, it's hard to tell which one is legitimate. Could you help me out? How can I distinguish between the real ChatGPT app and the fakes? Is there a specific way to verify its authenticity? I want to make sure I'm downloading the right one to get the best experience and avoid any potential scams or malware. Any advice would be greatly appreciated.