According to Bank of America and Sensor Tower data, OpenAI’s ChatGPT reached 664 million mobile daily active users in September, marking a 7% increase from August and a 69% rise year-over-year. As of September 29, 2026, OpenAI reported 1.2 billion weekly users for the service.
Google’s Gemini app recorded 151 million mobile daily users, reflecting an 11% month-over-month growth and a 321% increase compared to the previous year. The app surpassed 1 billion monthly users in August 2026.
Meta launched its personal AI agent app, Muse, on September 8, 2026. By October 5, the application reached 1.96 million mobile daily users. The app is powered by the Muse Spark model and is designed to perform tasks such as managing emails and booking reservations.
For comparison, other AI applications in the same dataset include xAI’s Grok with 2 million mobile daily users and Meta AI with 6 million. Analysts are now monitoring user retention rates for Muse to determine if the app can transition from a novelty to a sustainable platform.
