Why Halo
Emergency buttons help after something happens. Halo is built for before: noticing small changes early, while there's still time to do something about them.
Read why we're building Halo →How it works
01
A small, discreet device that clips to what you already wear. No screen to squint at, nothing to charge every night.
02
Over a few weeks, Halo quietly learns your usual balance, movement, and vital signs. Your normal, not an average.
03
The app tells you how you're doing in plain words, and you choose exactly what to share, and with whom.
What Halo does
Balance fades so gradually that nobody notices until a stumble. Halo measures the drift you can't feel, day after day.
An emergency button helps after a fall. Halo works before one, with time enough to see a doctor, adjust, and stay steady.
Your information is yours. Nothing is shared with anyone, family included, unless you choose to share it.
Your day with Halo
This is a working preview of the Halo app, at real phone size. The glowing buttons are ones you can press: tap Today, Week, and Sharing at the bottom of the phone.
What you're seeing · Today
Each morning, Halo compares today with your own usual pattern and answers one question in plain words: how am I doing? No graphs to decode, no scores to chase.
What you're seeing · Week
The week view shows your steadiness day by day. A slower day isn't an alarm. It's marked gently, as worth a look, so you can connect it to real life: a sore knee, a poor night's sleep.
What you're seeing · Sharing
You decide who sees what, one switch at a time. Try the switches. Sharing is always your choice, and location stays off by default. Your day is yours.
Pricing
Halo works fully without a subscription. Pro adds sharing and deeper insight, if you want it.
Halo Basic
$0forever
No subscription. Everything you need to understand how you're doing.
✓The Today view, every morning
✓Balance, movement & vital-sign trends
✓Your weekly review
✓Private by default, always
Halo Pro
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✓Everything in Basic
✓Share summaries with people you trust
✓Early notice when patterns change
✓A real person on the phone when you call
The Halo device is reserved separately with a $100 refundable founding-member deposit, which includes three months of Halo Pro. Reserve yours →
Founding-member reservation
Secure one of 100 founding-member spots with a refundable $100 deposit, and get three months of Halo Pro included. Enter your email; payment takes a minute.
Refund guarantee
If Halo doesn't launch by June 30, 2027, your $100 deposit is refunded in full. Change your mind before launch and it's refunded too.
Launching April 2027 · Boston, MA