Meta’s AI agent app Muse hits number two on the US Apple App Store
Meta's personal AI agent climbed to the top of US App Store charts within days of its September launch, though download volumes trail earlier Meta debuts.
Meta Platforms has a new chart-topper. Muse, the company’s personal AI agent app, reached the number one spot on the US Apple App Store free apps chart, capping a rapid rise since its launch in early September 2026.
What Muse actually does
Most AI apps function as sophisticated question-and-answer machines. Muse is built around a different premise: executing multi-step tasks on the user’s behalf, things like booking travel, managing calendars, and handling the kind of to-do list that tends to accumulate across a dozen different apps.
The app runs on Meta’s Muse Spark model family, version 1.3, and operates inside secure virtual machines within Meta’s own cloud infrastructure. At launch, Muse was available in the US only, accessible through iOS, Android, the web at muse.ai, and via WhatsApp. The app offers both a free tier with usage caps and paid subscription plans for heavier users.
A Mac version followed on September 17, roughly nine days after the initial release.
The numbers behind the climb
By September 10, just two days after launch, Muse had accumulated over 83,000 downloads on US iOS devices, according to Sensor Tower. That placed it at number two on the Apple App Store Top Charts at the time, before the subsequent push to the top position.
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Muse’s early trajectory was actually slower than several of Meta’s own prior launches. Threads, Meta’s Twitter rival, pulled in 4.3 million US downloads at launch. The Meta AI standalone app opened with around 108,000 US downloads in its first comparable window. On Google Play, Muse ranked at number 338 in the Productivity category at launch.
Meta’s stock moved modestly on the news, gaining around 0.6% following the launch.
What this means for Meta’s AI ambitions
Meta embedded its AI features deeply into WhatsApp, Instagram, and Facebook before spinning out standalone products, which means Muse launches into an ecosystem with billions of existing users rather than starting from zero.
The competitive landscape Muse enters includes Google’s own agentic AI products and Anthropic’s Claude. The timing of the launch also followed a significant legal settlement for Meta.