VILO Ring

Five streams, one calm read: your sleep, your heart (rate and HRV), your skin temperature, your movement, and your cycle. Signal OS draws them together so you see the pattern, not the noise.

While you sleep, Vilo follows your heart rate, HRV, movement, and temperature to map your nights — deep sleep, when your body does its repair; REM, when your mind sorts the day; and the light sleep in between. In the morning, it surfaces what mattered and points to the next step. It can also wake you with a gentle haptic alarm — no sound, no startle.

Vilo reads your heart rate and heart-rate variability through the day and night. HRV tends to fall when you're stressed, tired, or running down — so when yours shifts, Vilo gives you the context to ease off or push on. Trends, read over time, not a single alarming number.

Yes — quietly. After ovulation your body temperature rises slightly, and your resting heart rate tends to climb through the second half of your cycle. That's physiology, not guesswork. Vilo follows those shifts across your month and carries the context forward, so a restless night or a low afternoon makes more sense.

Yes. Vilo senses movement day and night and folds your activity into the bigger picture of energy and recovery — so effort and rest are read together, the way your body actually experiences them.

Vilo's sensing is built on methods drawn from published research and measured against recognized reference standards. We hold the engine to clinical-grade rigor and keep the read human.

Signal OS is the intelligence that runs Vilo. Where other rings hand you a score and a stack of charts, Signal OS does the opposite — it listens across your signals, learns your baseline, and turns it all into a few plain words, at the right moment. It's built on three layers: Signals, the right read surfaced when your body has something to say; Vitals, your core rhythms gathered in one place; and Kits, gentle tools for the small moments that shape a day. Quiet by default. Yours to turn up.

Membership unlocks the deeper side of Signal OS — more personalization, more context, more advanced guidance that sharpens the longer you wear the ring. The hardware is yours; Membership is what keeps the agent learning.

$10/month. If you pre-order, your first 12–24 months are included — a $120–$240 value, depending on your tier.

Yes. Reserve by October 2026 and you'll receive 12–24 months of Membership included, depending on your tier — our thank-you for backing Vilo early.

Always. You set the frequency, the depth, and the categories you want to hear about. Quiet is the default; turning it up is your choice. Over time, the aim is simple — you trust the agent more, and manage it less.

You. Vilo is built so your most personal signals — sleep, heart, cycle — stay yours. We don't sell your data, and we don't trade it to advertisers. Full stop.

Yes. Your data is encrypted in transit and at rest, and tied to your account, not your name on a list somewhere.

Anytime. You can export or permanently delete your data from the app whenever you choose. It's your record to keep — or to erase.

No. Cycle and reproductive data is among the most sensitive a person carries, and we treat it that way — never sold, never shared with advertisers, fully yours to delete.

Yes. Every Co-Founder tier includes a 2-year warranty — twice the standard cover, because we'd rather you wear it freely than worry about it.

Yes, and yes. Your deposit is fully refundable, and you can cancel anytime before your order ships. No questions, no friction.

$100 Deposit — Become a Co-Founder. Reserve with $100, cancel anytime. Includes the ring at founder pricing ($379), a 2-year warranty, and 12 months of Membership. Pay the remaining $279 at launch. Full $379 — Full Journey. Confirm today with the full $379, fully refundable. Same founder pricing and warranty, plus 24 months of Membership. The strongest way to back us early and get an extra year of Membership.

Standard orders include a 30-day free trial. Early supporters get 60 days — limited and one-time — because rhythm and trends take time to read, and early adopters earn extra patience. Not a fit? Return it for a full refund.

On the delivery date shown by the carrier — so your 60 days are 60 real days with the ring, not days lost in transit.

Start a return request within your trial window, then send the ring back following our instructions. Please include everything from your order — ring, charger, cable, care pad, and sizers. Once it's inspected, your refund is processed. Full details live on our Support page.

Not directly, for now. If you need a different size, return your original order within the window and place a new one for the right fit. Our free Sizer Set is built to get you there the first time.

Email support@vilo.co or reach us through the Support page. If it's about an order, include your order number and we'll move faster.