A week after launch, Meta’s Muse climbed to No. 1 among free apps on Apple’s U.S. App Store, ahead of ChatGPT—an early vote for AI that does more than hold a conversation. Meta says the agent can research, complete forms, shop, book reservations and connect to services including email, calendars, Spotify, Instagram and OpenTable, while asking for approval before sensitive actions.¹

The early appeal is straightforward: users want delegation, not another search box. One entrepreneur said Muse found matching auto insurance that cut his annual cost by $3,500, bought the new policy and cancelled the old one in roughly five minutes. Another user said it found a jacket, applied live discount codes and completed the purchase. Those claims are striking, though they remain early, user-reported examples rather than proof of consistent performance.¹

Meta is now widening that ambition beyond the phone. In announcing Muse for Mac, Mark Zuckerberg said the assistant works across “apps, files, calendar, notes, and messages” and stressed that “you control what it can access.”Mark Zuckerberg (finkd)² That promise of user control goes to the heart of the product’s challenge: an agent cannot be very useful without seeing enough of a person’s digital life to act on it.

The company is also courting outside services. Zuckerberg said developers can build connectors in which they provide the API while Muse supplies “the agent, the browser, and the context of what the person actually wants.”Mark Zuckerberg (finkd)³ For Meta, that could turn a popular app into a gateway for commerce and services.

But the friction is already visible. One early user said Muse could not summarize a saved Instagram workout video because it saw only the first frame, despite Instagram being a Meta property. More broadly, agents need accurate prices and inventory, while retailers such as Amazon have incentives to resist bots that reduce their sites to little more than fulfilment pipes. Privacy, errors and permission are not side issues; they are the test Muse must pass after winning the download race.¹