OpenAI’s ChatGPT app has extended its lead in Apple’s App Store, accumulating about 29.5 million iPhone downloads in the 28 days through 24 June, according to app-tracking data shared by industry analysts. The figure almost equals the combined 32.8 million installs of TikTok, Facebook, Instagram and X over the same period, reinforcing ChatGPT’s status as the most-downloaded application on the platform. The popularity reflects rapid mainstream adoption of the generative-AI chatbot across everyday tasks, from note-taking and language practice to budgeting advice. Analysts say the breadth of use cases is allowing the software to pull users away from single-purpose utilities that have long dominated mobile screens. Engagement metrics point to unusually strong staying power. ChatGPT’s one-month retention rate now hovers around 90%, up from under 60% two years ago, and its six-month retention is approaching 80%, the data show. YouTube, previously the benchmark for user loyalty, posts roughly 85% retention after one month. The combination of record downloads and industry-leading stickiness positions OpenAI as a formidable consumer-app rival to social-media incumbents and intensifies competitive pressure on mobile service providers whose offerings ChatGPT increasingly displaces.