You don't need the ChatGPT app to use GPT-4o on your phone. 4omodel.com works perfectly in mobile browsers — Safari on iPhone, Chrome on Android, or any other mobile browser you prefer.
The mobile experience is fully optimized: the chat interface adjusts to your screen size, the keyboard works seamlessly, and responses stream in real-time. It feels like a native app without the download.
Pro tip: add 4omodel.com to your home screen for an app-like experience. On iPhone, tap the share button and 'Add to Home Screen.' On Android, tap the three dots menu and 'Add to Home screen.' Now GPT-4o is one tap away.
Mobile GPT-4o is perfect for on-the-go tasks: quick fact checks, message drafting, language translation, recipe ideas while shopping, travel questions, or just satisfying your curiosity about anything.
The free tier works identically on mobile — 10 messages per day, same GPT-4o model, same response quality. Your message count is tied to your session, not your device, so you get the same 10 messages whether on desktop or mobile.