Meta Muse Hits 10.2M Downloads in 40 Days, Retention Mixed

Meta's AI agent Muse reached 10.2 million U.S. downloads within 40 days of launch, a pace only 11 other apps have matched, most of them mobile games. Day 7 retention stands at around 30%, above rival AI app averages of 19%, and Day 14 retention at roughly 22-23%, above rival averages of 16%. Daily active users reached 2.5 million on October 16, up 15% in a week, but still under a quarter of total U.S. downloads. By comparison, Day 14 retention trails WhatsApp (67%), YouTube (59%), Instagram (54%), and TikTok and Snap (37%). Users have reported that Muse's notifications feel like spam, and critics note that most use cases are simple one-off tasks, raising questions about whether app-open retention driven by push notifications reflects genuine engagement.