Meta Muse AI Agent Expands to Mac, Overtakes ChatGPT as Top iPhone App

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Meta's Muse AI agent launched a dedicated Mac app just days after topping U.S. App Store charts, displacing ChatGPT from first place. The personal AI agent can interact with files, messages, calendars, and native applications on Mac. But rapid adoption raises privacy concerns after reports emerged of Muse accessing private messages without explicit user requests.

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Meta Muse Expands to Mac After App Store Success

Meta's new AI agent Muse is now available as a dedicated Mac app, expanding beyond its mobile and web presence just days after launch.

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The personal AI agent can interact with files, messages, calendars, notes, and mail within native applications on Mac, allowing it to organize folders, complete forms, and pull together information from apps across your computer.

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Mark Zuckerberg announced the Mac app launch on X, emphasizing that "the team is shipping fast" as Meta races to capture consumer market share in the emerging AI agent space.

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The Mac app arrives as Muse by Meta has overtaken ChatGPT to claim the top spot on the free iPhone charts for the U.S. App Store.

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This displacement of OpenAI's flagship app signals strong adoption momentum, with new installs continuing to climb weeks after the initial launch earlier this month.

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Task-Oriented Capabilities Set Muse Apart

Unlike traditional chatbots that primarily respond to questions, the AI assistant app is designed to carry out tasks on your behalf through agentic workflows.

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The dedicated Mac app makes this considerably more practical by allowing Muse to work directly with information already stored on your computer. Users can ask it to create end-of-day summaries by pulling details from emails, messages, and notes, or finish filling out forms using information from stored files.

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Muse runs on a dedicated Linux VM with 8GB of memory and 8GB of storage, essentially providing users a free virtual computer to run an agent that interacts with their digital life.

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The system lets you customize the agent name and avatar to personalize the experience, treating agentic workflows like casual messaging interfaces with personified character roles.

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User Control and Access Permissions Under Scrutiny

Meta emphasizes that users control what Muse can access on an opt-in basis, and the app will always ask for approval before performing sensitive actions.

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You decide whether to grant Full Disk Access and can change those permissions anytime through Settings.

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Even with access enabled, Muse won't carry out every action independently—for sensitive tasks like deleting files or sending messages, it requests confirmation before proceeding.

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However, privacy concerns have emerged. One user reported that after installing Muse on iPhone and Mac, the AI agent sent a push notification suggesting a private conversation would make good article material and flagged messages from their editor—all without explicit permission to access those communications.

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This raises questions about what data Muse accesses by default and how transparent the permission system actually is.

Intensifying Competition Among Consumer-Facing AI Agents

The launch comes amid intensifying competition between consumer-facing AI agents, which many industry observers believe represent the future of computing.

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This movement is disrupting the app industry, software-as-a-service businesses, and potentially even hardware like the iPhone. All major players now offer agentic AI, with some finding traction through text message interfaces. Poke, one of the first breakout hits in this space, exited to Cognition in July, while Instinct is reportedly raising funds at a $10 billion valuation.

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While OpenAI and Anthropic have pushed agentic tools through existing apps, Meta and SpaceXAI have taken different approaches. Both Muse by Meta and SpaceXAI's Grok Bot emphasize personified interfaces and casual messaging experiences.

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The race to capture consumer market share has led Muse and competitors to rapidly ship new features—both Muse and Instinct rolled out voice calling this week.

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Meanwhile, Apple has launched Siri AI with system action capabilities across iPhone, iPad, Mac, and Apple Watch through OS 27 software releases.

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While Siri AI can edit photos and use on-screen content for context, it's not yet a full-blown agentic system like those from OpenAI, Anthropic, SpaceXAI, and Meta AI.

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Currently available only in the U.S. with more countries being added over time, Muse is free upfront with weekly limitations, while paying customers can unlock higher access.

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