Meta’s AI assistant, Muse, has exceeded 10 million US downloads within 40 days of its September launch, according to data from intelligence firm Sensor Tower. The app logged 10.9 million total downloads across its rollout in the US and Canada, with 10.2 million originating in the US. The pace makes Muse one of only 12 applications to cross the 10 million US threshold in that timeframe since tracking started in October 2015, outstripping the early 40-day domestic totals of ChatGPT at 3.7 million, Grok at 500,000, and Claude at 200,000. [1][2]
The rapid expansion has been fueled by heavy marketing. Muse represented 39% of Meta's total US advertising expenditure in October, up from 23% in September, driving the brand to 21st place in domestic ad impressions. Sensor Tower analyst Kara Lee pointed out that most other apps reaching this benchmark were games such as Pokémon GO and Fortnite, with Threads and Disney+ being the only other non-gaming software to join the group. [1][2]
Engagement remains unusually strong compared to rival tools, with Muse averaging a 30% retention rate after seven days and 23% after two weeks, alongside reaching 2.5 million daily active users on October 16. However, growth has encountered friction: Meta temporarily suspended the assistant's sharing feature to investigate vulnerabilities after security researchers revealed that shared chats could expose sensitive personal and corporate data. [1][2]