Meta's New AI Worker Just Knocked ChatGPT From #1

Ariel Ariel
Today

Meta has been working on AI for years. It even acquired Manus late last year, only for China to order the deal unwound in April. And while Meta AI might have the downloads, it isn't a household name like ChatGPT, Claude, or Grok.

Well, that changed last week with the release of Muse, an AI worker that goes beyond a simple AI chatbot and can do things for you without constantly chatting - much like Grok Bot from X. Meta says Muse can keep working after you close the app and come back when it needs approval.

Muse is taking off in a big way! The app spent most of last week near the top of both US charts. On Saturday, it reached #1 on the App Store, displacing ChatGPT. Google Play followed on Sunday.

Muse is now #1 in both stores.

Muse's US overall free app rank on the App Store and Google Play from September 9 through September 20, 2026

Appfigures Intelligence shows Muse made its way into 1.1M devices through Friday, almost entirely in the US (and Canada, but it's tiny) and mostly through the App Store. Downloads from Google Play are rising.

Muse cumulative estimated unified downloads from September 8 through September 18, 2026

AI workers feel like the natural evolution of AI this year, especially after OpenClaw made agentic AI easier to understand and experiment with. Now Meta, OpenAI, Anthropic, and xAI are all pushing toward workers that do more and chat less. Workers may not be as popular yet, but I expect their popularity to rise and eventually overtake chatbots as the role of the assistant becomes more doing and less talking.

Will Curiosity Turn Into Usage?

Here's the thing though, Meta can drive downloads pretty easily because it controls what is effectively an infinite ad network. Those downloads aren't necessarily real demand but rather curiosity. And curiosity may not translate into real usage. So Muse's million downloads may not be the same as Grok Bot's million downloads.

Using revenue as a proxy, curiosity hasn't turned into usage just yet... Grok Bot earned $175K in its first 11 days while Muse earned $27K after fees over the same launch window, according to our estimates.

Muse and Grok Bot cumulative estimated net revenue over each app's first 11 days

It's too early to judge so I won't, but the next few months will be interesting for AI workers, especially as Anthropic and OpenAI push more on that.

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The insights in this report come right out of our App Intelligence platform, which offers access to download and revenue estimates, installed SDKs, and more! Learn more about the tools or schedule a demo with our team to get started.

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All figures included in this report are estimated. Unless specified otherwise, estimated revenue is always net, meaning it's the amount the developer earned after Apple and Google took their fee.

Tagged: #ai

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