According to a new report from Sensor Tower, not only did Meta’s Muse become the 12th app ever to reach 10 million US downloads in 40 days, but it is also outpacing its peers in user retention. Here are the details.

A few weeks ago, Sensor Tower reported that Meta’s Muse app had surpassed 5 million downloads in the US , thanks to a mix of popularity and Meta’s massive ad push.

At the time, the app had spent 12 consecutive days at the top of the US App Store. Muse has since slipped to second place, but Sensor Tower now reports that it has become just the 12th app to reach 10 million US downloads within 40 days of launch, since the firm began tracking apps in October 2015.

For comparison, Sensor Tower says ChatGPT, Grok, and Claude reached just 3.7 million, 500,000, and 200,000 US downloads, respectively, during their first 40 days.

Per Sensor Tower data, ChatGPT scaled to ~15mn global downloads in its first 40 days post app-launch, as its global reach expedited its growth.…