Meta's AI agent has moved from your phone to your wrist. Muse version 15.0 landed on the App Store on November 9 with a new Apple Watch companion app, and Meta has confirmed a Wear OS version is live as well.
The release notes are blunt about it. "Add your Muse to your wrist with the new Apple Watch Companion App!" is the only feature listed for 15.0. Everything else in that update is "bug fixes and improvements."
The interesting part is not that it exists. It's what the watch app actually does, and what it asks you to trust.
What the watch app actually does
Think of the watch as a remote control, not a brain. Muse does not run an AI model on your wrist. Meta says the agent operates inside a cloud computer it calls Muse Secure VM, which has its own browser and holds the services you have connected. The Apple Watch and Wear OS apps start tasks, read updates, and approve actions.
On Apple Watch you can:
- Type a request with the watch keyboard
- Dictate it by voice
- Start a voice conversation with the agent inside the app
- Tap a complication on your watch face to jump straight in
Meta's own examples are the sort of thing an agent is supposed to be good at: searching for movie tickets, spotting a scheduling conflict between a meeting and a dentist appointment, suggesting a change, then carrying it out once you say yes. It can navigate websites, fill in forms, manage calendar events, and book things through connected services. It keeps working after the app closes and pings you when it needs permission.
A small animated character sits in the app, and you can personalize the avatar. Yes, really. You can make it look like a person, an animal, or something in between.
What you need to run it
The Apple Watch app needs watchOS 9.0 or later, and the iPhone app it pairs with needs iOS 18.0. Muse is free to download and carries optional paid subscriptions for the heavier tiers.
On the Android side the app is "Muse from Meta" in the Play Store, and the watch experience is aimed at Android 10 and up. Meta has not published a clean Wear OS compatibility list, which means you may have to just install it and see.
One thing Meta is clear about: the watch apps do not get direct access to your sensors. There is no indication Muse is reading heart rate, sleep, or workout data from the watch on its own. It can touch health and fitness services when you grant permission, but that is you handing over account access, not the agent sniffing your wrist.
Why this matters beyond one app
Two things are happening at once here.
The first is that the assistant is becoming the interface. Your watch already knows the time, your heart rate and your next meeting. What it has never had is something that can act on all of it. An agent that can reschedule the dentist because it spotted the conflict is a different product category from a voice assistant that can only answer questions.
The second is that Meta is now on your wrist without shipping a watch. The company has been working on AI and neural-input hardware, but software gets it in front of existing Apple Watch and Galaxy Watch owners years earlier. It sits right next to Gemini on Wear OS and Siri on the Apple Watch, competing for the same taps.
That competition matters for Apple specifically. Siri AI in watchOS 27 is Apple's answer, and it draws on what is on your watch. Muse arrives with a very different pitch: it will go off and do the thing in a cloud browser while you keep running.
The part you should read twice
Approving agent actions from your wrist is convenient. It also means the two-tap confirmation is now the entire safety mechanism between an AI system and your calendar, your email, and possibly your money.
Meta's track record on that is mixed at best.
In September, CNET columnist Jason Aten reported that Muse had synced roughly 187,000 lines from his Mac's Apple Messages database even though he had turned Full Disk Access off. Meta disputed the claim. It was serious enough that Apple changed macOS privacy settings in response, according to CNET.
Separately, a security researcher demonstrated a working vulnerability that could hijack the assistant, one that Meta's own documentation acknowledged was simple to exploit. CNET also reports that Muse asks for extensive access, including passwords, email, calendar, contacts, Notes and WhatsApp, and that Meta uses your interactions to train its models unless you opt out in settings.
Meta's own Play Store listing carries the disclaimer that the agent "may provide inaccurate information or take unexpected actions" and advises users to check its work. On a phone that is a footnote. On a watch, where the interaction is a thumb tap and a glance, it is the whole experience.
None of this means the watch app is malicious. It means the watch is the worst place to supervise an agent and the best place to accidentally approve one.
What to do with it
If you want to try Muse on your wrist, treat it like a new employee with a company card. Connect the calendar and the email, skip the financial accounts, watch the activity log for a week, and decide from there.
If you are on the fence, the feature set is not yet compelling enough to force the decision. Most of what Muse does on a watch is approve, confirm, or read a status line. You can do all three from your phone in about the same number of seconds.
Where it gets genuinely useful is the long task: the booking that needs three steps across two sites, or the rescheduling that has to check four calendars. That is the thing to test, and it is the thing worth judging the wrist app on.
Bottom Line
Meta put an agent on Apple Watch and Wear OS because the wrist is where you already look twenty times an hour, not because a 1.8-inch screen is a great place to run a booking engine. The watch app is a notification-and-approval surface for a cloud agent, and it works as one.
Just remember what you are approving, and how quickly a thumbs-up travels from your watch face to something that can move money.
Sources: Muse from Meta on the App Store, Muse from Meta on Google Play, TechCrunch, AppleInsider, CNET, The Gadgeteer.
Related reading on WatchesReviewed: Meta's smartwatch plans and the Malibu 2, Siri AI on older Apple Watches, and how the Galaxy Watch 9 stacks up against the Apple Watch. Picking up a watch to try any of this on? Here are the Apple Watch Series 12 and the Samsung Galaxy Watch 9 on Amazon.
