Meta launched Muse on four surfaces at once: an iPhone app, an Android app, the web at muse.ai, and inside WhatsApp. Since then the list has grown: a Mac app arrived within days, a native iPad app shipped on October 7, and Microsoft announced a native Windows app on stage that same day (no release date yet). Most people assume the WhatsApp version is the same product in a different wrapper. It is not quite. The agent behind the chat is the same one, same memory, same cloud computer doing the work. The window you look through is smaller.
What works on WhatsApp
The core job travels with you. From a WhatsApp chat you can tell your Muse to send an email, book travel, fill out a form, monitor a price, or negotiate something on your behalf. The agent does the work in its own virtual machine and reports back in the chat, and it keeps working after you leave. That part is genuinely useful: no new app to learn, and results and reminders land where you already read messages.
This is the distribution story. Meta did not need to convince billions of people to download a new app. It dropped the agent into the messaging habit they already have.
What you only get in the full app
Here is where I owe you honesty about sourcing: Meta has never published a feature-parity table, so the gap below is assembled from hands-on tests and third-party guides, not an official list.
The clearest documented gap is the proactive layer. The full app has an Ideas tab and a personalized feed where the agent suggests work before you ask (one reviewer's Muse started proposing recurring Marketplace desk searches). A third-party how-to guide notes WhatsApp "carries core messaging but drops some app surfaces (full Ideas/feed-style tabs)." You get the chat, not the dashboard.
Related: in the full app, a trip comes back as an itinerary and spending as a dashboard (Meta calls these artifacts), and you can open a tab to watch the agent's screen while it works a long task through its browser. None of that fits in a chat bubble. Voice mode, the Goals tab for long-running jobs, and the audit trail of everything the agent has done are app surfaces too.
Pick the surface by the job. Quick question, quick errand, a reminder you want pinged about: WhatsApp is fine. A multi-day project with artifacts to review: open the app.
The signup catch
Here is the part that confuses everyone: WhatsApp is a surface, not a front door. As of this writing, new users cannot sign up through WhatsApp. Signup happens in the app or on muse.ai (email or phone number, a payment card on file even for the free tier, 18 and up, US and Canada), and then the same agent answers on WhatsApp too.
There is some conflicting third-party noise here. A couple of integration guides describe driving Muse automations from WhatsApp, which led people to think WhatsApp onboarding is open. That looks like connector plumbing for existing accounts, not new signup. Until Meta says otherwise, treat WhatsApp onboarding as closed.
Do not read the missing features as missing safety. Meta has said nothing about a different permission or approval model on WhatsApp, so assume the same rules apply: the agent should ask before sensitive moves, and approvals come back to you. If anything, a chat surface makes approval cards easier to skim, so read them carefully.
The surface list keeps growing
On October 7, Meta shipped a native iPad app (version 10.0), about a month after the iPhone debut. The bigger screen suits the deep-work side of the product: reviewing drafts, approving purchases, and following a long task while switching between apps. The same update added connectors aimed at small business work, including Asana, Canva, Dropbox, Figma, QuickBooks, GitHub, Klaviyo, and Zoom, plus Granola and Notion for everyday tasks.
That same day, on stage at Microsoft's Windows and Surface event, Microsoft's Pavan Davuluri announced that Muse is "coming soon" to Windows as a native app with MXC integration (Microsoft's sandboxing layer for agents, built to let people and IT teams set rules on what an agent can touch). No release date was given.
Instagram is also a surface
On September 27, Meta's AI chief Alexandr Wang announced you can add your Muse to your Instagram profile: open the app, go to your profile, tap "+ Add your Muse," tap Add on the banner, and it shows up below your bio. Tapping it opens a Main chat with the agent.
For creators there is an extra layer: once you approve Muse's access to your Instagram info, it can do trend analysis, screen collaboration offers, and summarize your account activity.
One caveat from the trade press: Meta has confirmed Muse can call US businesses on the phone, but it has NOT announced Muse opening chats with business accounts on WhatsApp or Messenger. If some account messages you claiming to be your Muse on a business chat, verify it through official channels.
Quick answers
Is Muse on WhatsApp the full product?
No. Same agent and memory, but the feed, Ideas tab, artifacts, Goals tab, and screen view are full-app surfaces. WhatsApp is the chat window.
Can I sign up for Muse through WhatsApp?
Not as of this writing. Sign up in the app or at muse.ai, then reach the same agent on WhatsApp.
Does WhatsApp Muse cost extra?
Meta has announced no separate tier or price for the WhatsApp surface. Third-party pricing trackers show the same three tiers (free, $20 Power, $100 Maximum) and the same allowances everywhere the agent runs.
Is it on Instagram too?
Yes, since September 27. Add it to your profile and chat from there.
Frequently Asked Questions
Q: Will a task I start on WhatsApp continue in the app?
A: Yes. There is one ongoing conversation behind every surface, and memory is supposed to survive the thread. You can hand it a job in WhatsApp and review the results in the app later.
Q: Does Meta itself say WhatsApp is a limited version?
A: Meta has not published a parity list. The limited-feature-set description comes from third-party launch coverage and hands-on tests, which consistently show the feed, Ideas, and dashboard surfaces as app-only.
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