Meta's Muse AI app achieved 10.2 million U.S. downloads and 10.9 million total downloads within its first 40 days of launch in September 2026.

From the articleMeta’s Muse hits 10M US downloads in 40 days, a milestone reached by only 11 other appsAlso in Meta’s Muse reaches 10 million U.S. downloads in 40 days, a milestone matched by just 11 other apps | Межа, Meta's Muse hits 10.2M US downloads, but the fast start runs on ad spend - Cryptopolitan