Full Breakdown
Meta’s Muse AI Agent: Rapid Adoption and Amazon Block
By Drooid · · How we work
Core Event – Launch, Early Surge, and Amazon Block
Meta launched its personal AI assistant Muse on September 8. Within the first week the app rose to No. 1 on the U.S. Apple App Store’s free-app chart, overtaking ChatGPT. Reported download figures vary: Sensor Tower recorded more than 902,000 downloads in the first six days; TradingKey cited 730,000 in about five days; Apptopia estimated 1.8 million iOS downloads in the first twelve days (U.S. & Canada) and 2.8 million total installs globally. Daily active-user (DAU) counts also differ—Apptopia reported 642,000 U.S. DAU and 359,000 iOS DAU, while Investing noted a peak of 448,000 DAU on September 18. On September 19 Muse logged 264,000 U.S. downloads, marking a third consecutive day above 200,000.
The block went live on Sunday night, shortly after Meta declined a request to remove Amazon from Muse’s capabilities.
Background & Context – The Rise of Agentic AI
Muse shifts from text-only chatbots to “agentic” assistants that can book travel, fill forms, make purchases and integrate with services such as Gmail, Google Calendar, Instagram and WhatsApp. Meta markets Muse as a free tier with usage limits and paid subscriptions at $20 or $100 per month for higher token allowances. The launch follows broader industry moves toward CPU-intensive AI workloads, which have spurred a rally in semiconductor stocks.
Data & Statistics
- Downloads: 902 k (Sensor Tower, six days); 730 k (TradingKey, five days); 1.8 M iOS (Apptopia, twelve days); 2.8 M total installs (Apptopia).
- DAU Peaks: 642 k U.S. (Apptopia); 359 k iOS (Apptopia); 448 k overall on September 18.
- Stock Reaction: Meta shares rose up to 11 % on Monday; AMD 10 %, Intel 15 %, Arm 16 %.
- Amazon Revenue: $68 billion in 2025, underscoring the retailer’s stake in controlling the shopping experience.
Official Statements & Responses
- Amazon: Spokesperson Lara Hendrickson said third-party applications must operate openly, respect service-provider decisions, and identify themselves. She noted that Muse does not identify itself while browsing and appears to capture and store customer credentials, potentially bypassing Amazon’s personalization and advertising mechanisms.
- Meta: The company has not commented on the block. In its launch announcement, Meta asserted that Muse cannot see users’ passwords or payment methods; any credentials a user shares are stored in secure storage that the agent can use without viewing them.
Criticism & Opposition
Amazon’s objections focus on three points: (1) Muse accesses Amazon without prior notice, (2) the agent fails to identify itself, and it may scrape account data, undermining Amazon’s personalization and ad-targeting. The retailer’s pop-up cites violation of its Conditions of Use, which customers agreed to when creating their accounts. Amazon previously sued Perplexity over similar behavior, reinforcing its stance that third-party AI agents must be transparent and opt-in.
Conflicting Reports & Gaps
- Download Metrics: Sensor Tower, TradingKey and Apptopia provide differing totals for the same launch window, with no explanation of methodological differences.
- DAU Figures: Apptopia’s U.S. DAU estimate (642 k) contrasts with Investing’s peak of 448 k DAU on September 18. Sources do not reconcile these discrepancies, leaving the exact user-engagement level uncertain.
What’s Next
Meta CEO Mark Zuckerberg is slated to speak at the upcoming Meta Connect conference on Wednesday night, where further demos of Muse and potential updates to the Muse Spark models are expected. The event will likely address both the product’s rapid consumer uptake and the ongoing dispute with Amazon over agentic shopping access.