https://arstechnica.com/information-technology/2023/05/ai-in-your-pocket-chatgpt-officially-comes-to-iphone-with-new-app/

On Thursday, OpenAI released a free ChatGPT app for iPhone in the US that includes voice input support through its Whisper AI speech recognition model; it can also synchronize chat history with the web version of the AI assistant. The move brings ChatGPT to an official native mobile app for the first time.