Meta’s streak at the top of the App Store continues in the US and Canada, as its AI assistant Muse is now past 5 million downloads, according to Sensor Tower. Here are the details.
Muse continues its 12-day streak at the top of the US App Store
Three weeks ago, Meta launched Muse in the US. Soon after, it overtook ChatGPT as the top free app in the US App Store
Today, according to a projection by Sensor Tower Senior Insights Analyst Kara Lee, Muse crossed 5 million downloads. That means it reached the milestone considerably faster than ChatGPT, Grok, and Claude, which the market intelligence firm says took 56, 103, and 492 days, respectively.
Muse is Meta’s agentic AI assistant, capable of browsing the web and carrying out tasks on a user’s behalf, including sending emails, shopping, filling out forms, and booking travel.
Sensor Tower adds that Claude and Grok were iOS-exclusive in their first 5 days. Meta’s Muse app, by contrast, is available on iOS and Android, but only in the US and Canada.
Here’s Sensor Tower with more context on how Muse’s 5 million-download milestone compares to other major app launches:
According to Sensor Tower estimates, only 23 apps have reached over 5mn US downloads within 22 days of launch. ~85% of these apps are mobile gaming apps, including Fortnite, Pokemon GO, Candy Crush, and more. There were only 3 apps within that list that are not gaming apps, including Disney+, HBO Max, and Threads, which received ~20mn, 18mn, and 14mn downloads during that time, respectively.
The report adds that while Meta’s Muse app appears to have attracted significant public interest, Meta’s own advertising push has likely played a role in its rapid adoption.
Sensor Tower says “Meta began to ramp advertising spend for Muse on Wednesday, September 16, 2026, as downloads spiked 73% DoD,” and adds:
According to Sensor Tower data, Muse has received the largest share of Meta’s house ads, accounting for up to 50% of daily house impressions over the past two weeks (9/14-927), as Facebook and WhatsApp ceded share of impressions during the same period.
Sensor Tower also says Muse ranked among the top 15 brands by advertising impressions in the US during the week of September 21 through September 27.
Have you downloaded Meta’s Muse app? Let us know in the comments.
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