ChatGPT is now available as an iOS app. Plus, the app interface seems a bit more user-friendly than using ChatGPT on a mobile browser. You’ll need to subscribe to ChatGPT Plus to get access to its GPT-4 model, as well as the other Plus features. The app will roll out to U.S. users first, then expand to more countries in the coming weeks. ChatGPT on Android “soon.” OpenAI said an app is coming soon for Android users.