Meta's personal AI assistant Muse, launched September 8, keeps dominating the charts: roughly 5 million U.S. downloads within three weeks, topping the free-apps rankings on both the iOS App Store and Google Play in the U.S. — ahead of ChatGPT, Claude and Grok. But as CNBC reported on October 7, the real test is just beginning: turning downloads into a daily habit.
Third-party data sketches the launch: Sensor Tower counted 2.5 million downloads in 13 days; Apptopia estimated 2.8 million global installs in 12 days. For comparison, Anthropic's Claude managed 400,000 and xAI's Grok 200,000 in comparable windows — only ChatGPT's 3.1 million debut-period downloads still top it.
But downloads aren't retention: by late September Muse had about 700,000 daily active users handling more than 1 million daily prompts — a wide gap between installs and regular use.
Muse's pitch isn't chatting, it's doing: booking flights, sending emails, filling out forms, shopping online. It runs in a virtual machine in Meta's cloud, executing multi-step tasks in the background. Meta has wired it into Shopify, Expedia and PayPal — with one conspicuous gap: Amazon has blocked it.
Pricing is set: a free tier plus $20 and $100 monthly plans, with token-usage caps for heavy users.
Muse mania lit up Meta's stock: more than 11% in a single session after launch, with Wells Fargo raising its price target to $1,000 — among the highest on Wall Street. On October 7 the stock printed a "golden cross" (the 50-day average crossing above the 200-day), a classic bull-market signal for technicians.
CNBC flags three hurdles: first, converting trial downloads into daily use; second, trust — an agent needs deep inbox, calendar and payment access, and Meta just agreed to a nearly $17 billion settlement, so users may balk at handing over those keys; third, cost — agents are far pricier to run than chatbots, Meta expects most users to stay on the free tier, and the compute bill has to be covered by the $100 plan and merchant commissions few have tested.
Security footnotes abound: 404 Media reported Meta rushed to fix a "VM escape" vulnerability just before launch, and attackers have used fake Muse ads in browser-in-browser phishing attacks.
Topping the download chart was just the ticket in. For Meta, the real exam is: three months from now, how many people still open it every day.