WILLIS.
Join the waitlist

Runs your day. Shows you anything.

Willis is the voice assistant that keeps your day on track and answers with a 3D model you can turn and take apart: in your room on a Meta Quest, or on your phone or computer screen. An electrician gets the panel, a nurse gets the heart, a mechanic gets the engine.

Join the waitlist

Opening soon: $25 a month after a 7-day free trial.

  • Talk to it like a person. It answers out loud, with captions.
  • Ask for anything and hold it: an engine, a breaker panel, a heart.
  • Runs in the browser on a Quest, a phone or a computer. Nothing to install.
Live 3D
Inline-4 Car EngineExplode it to see every part
Drag to turn it. Tap a piece to name it.
Loading the hologram…

Here's an inline-four engine. Drag to turn it, explode it, or ask me where a part is.

This demo shows models, takes them apart, names parts and shares facts.

One assistant, whatever your day looks like

Willis keeps the schedule, answers out loud and puts the thing you're working on in front of you. Pick a day.

You

Show me a 200-amp panel. Where does the main bonding jumper go?

Willis

Here's a 200 A panel. The bonding jumper ties the neutral bar to ground, in the main panel only. It's the lit piece.

On screen

The breaker panel, taken apart, with the bonding jumper glowing.

What Willis can do

Talk or type, in a headset or on a phone. Everything in this list is part of the launch plan. What's being built after that is further down.

How it works

  1. 1

    Open Willis

    On Meta Quest, open it in the browser and tap HOLO MODE. On a phone or computer, any modern browser works.

  2. 2

    Ask for something

    Say what you want to see or understand. Typing works too.

  3. 3

    Take it apart

    Turn it, explode it, pull out a piece, and ask about any part of it.

Where it runs

Meta Quest 3 and 3S

HOLO MODE puts Willis and your holograms in your room through passthrough. Use your hands or the controllers.

Phones

iPhone or Android, in Safari or Chrome. Turn models with a finger and add Willis to your home screen.

Computers

Any modern browser on Mac or Windows. Drag to turn models, then type or talk.

Plans

Planned launch pricing; it can still change. Every plan starts with a 7-day free trial, and built-in holograms are unlimited on every plan. Voice minutes and custom designs come with a monthly allowance, and you can top up when you need more.

Willis

$25a month

Billed monthly

For learning and everyday questions.

Join the waitlist
  • 200 voice minutes a month (about 7 a day)
  • 200 custom designs a month
  • Unlimited built-in holograms
  • HOLO MODE on Meta Quest, plus phone and computer
  • Your calendar from a feed link
  • Notifications on your phone

Willis Max

$100a month

Billed monthly

For heavy daily use: about 33 minutes of talking a day.

Join the waitlist
  • 1,000 voice minutes a month (about 33 a day)
  • 500 custom designs a month
  • Everything in Willis

Which plan fits you?

Typing doesn't count toward voice minutes.

Built-in models like the heart, DNA and atoms never count.

About 300 voice minutes and 43 custom designs a month.

Willis plus 2 voice packs: $35 a month

Voice minutes300 of 320
Custom designs43 of 200

Willis Max would be $50 a month.

Compare plans
FeatureWillisWillis Max
Monthly price$25$50
Voice conversation200 minutes a month1,000 minutes a month
Custom designs200 a month500 a month
Built-in hologramsUnlimitedUnlimited
HOLO MODE on Meta Quest 3 and 3SIncludedIncluded
Phone and computerIncludedIncluded
Captions on every spoken replyIncludedIncluded
Calendar from a feed linkIncludedIncluded
NotificationsIncludedIncluded
At a limitTyping and built-ins keep workingTyping and built-ins keep working
Top-up packs$5 each$5 each
Export or delete your dataIncludedIncluded

Prices in US dollars. Sales tax may apply where you live. Cancel any time from your account; you keep access until the end of the period you paid for.

Your data stays yours

Willis is built so nobody can see anyone else's data, and you can take yours with you or delete it at any time.

Walled off
Your data is reachable only through your own signed-in session, and automated tests check that one account can never read another's.
Sign in without a password
You get a one-time link by email. Sign-in links and sessions are stored only as scrambled hashes.
Secrets sealed
Calendar links and other secrets are encrypted with AES-256 and tied to your account.
Export or delete
Download your data or delete your account at any time.
No ads, no selling
We don't sell your data and we don't show ads. One cookie, only to keep you signed in.
Learning, not diagnosis
Willis is for learning and curiosity, not medical advice. Don't use it to diagnose or treat anyone. It's an AI, and it says so.

Why it's called Willis

The Circle of Willis is a ring of arteries at the base of the brain. It joins the brain's front and back blood supplies, so blood has more than one way in. It's the first hologram on this page, with blood moving the way it does in life.

Questions

Do I need a VR headset?

No. On a phone or computer you can turn, explode and explore every model on screen. A Meta Quest adds HOLO MODE, where the holograms float in your room and you handle them with your hands.

Which headsets work?

Meta Quest 3 and Quest 3S, in the headset's built-in browser. HOLO MODE uses passthrough, so you see your room and the holograms together.

What's a custom design?

Anything that isn't built in. Describe it and Willis designs a 3D model of it in about a minute, and it appears the moment it's done. Built-in models never count toward your allowance, and designs you make are saved to your account.

What counts as a voice minute?

Time spent in a live voice conversation with Willis. Typing to Willis doesn't use voice minutes.

What happens when I reach a limit?

Willis tells you how much you've used. Typing and built-in holograms keep working. Voice and new designs pause until your next month starts, or you can add a $5 pack.

When can I use it?

Willis is opening soon. The live demo on this page works today. Join the waitlist and you'll get one email the day it opens.

Is there a free trial?

Yes. When Willis opens, your first 7 days are free.

What happens to my email?

It's used for one thing: telling you when Willis opens. It's never shared or sold, and you can ask to be removed by replying to that email.

Can I cancel any time?

Yes, from your account. You keep access until the end of the period you've paid for.

Do I have to install anything?

No. Willis runs in your browser. On a phone you can add it to your home screen so it opens like an app.

Where does the anatomy come from?

The heart is adapted from BodyParts3D, a research anatomy dataset from the Database Center for Life Science, used under CC BY 4.0: 57 structures from the dataset, ventricular walls modeled from its cavities, and a conduction system placed by our anatomy reviewers. The heart was checked by two independent anatomy reviews, and every built-in anatomy model gets the same before launch. Custom designs are AI-generated and can contain mistakes.

Is Willis medical advice?

No. Willis is for learning, not medical advice. Don't use it to diagnose or treat anyone.

What happens to my data?

Your account's data is walled off from everyone else's. You can download your data or delete your account at any time. We don't sell data or show ads.

Is Willis a person?

No. Willis is an AI assistant, and it says so.

Be first when Willis opens

Planned at launch: $25 a month, after a 7-day free trial.