1. Choose your finish and size
Smart rings should fit snugger than a regular ring. The sensors need to touch your skin, so pick the size that feels snug but still slides over your knuckle. The index or middle finger gives the best readings.
Option 1: Use a ring you already own
Measure straight across the inside of a ring that fits the finger you plan to wear Rivo on, then match the inner diameter below.
Option 2: Paper strip
| US size | Inner diameter | Circumference |
|---|---|---|
| 7 | 17.3 mm | 54.4 mm |
| 8 | 18.1 mm | 57.0 mm |
| 9 | 18.9 mm | 59.5 mm |
| 10 | 19.8 mm | 62.1 mm |
| 11 | 20.6 mm | 64.6 mm |
| 12 | 21.4 mm | 67.2 mm |
| 13 | 22.2 mm | 69.7 mm |
Tips: measure at the end of the day, when fingers are slightly larger. Between two sizes? Choose the larger one, since smart rings are wider than most rings and feel tighter.
Still not right? Our 30-day money-back guarantee has you covered.
2. Choose your quantity
Wear it for a month. If it's not for you, send it back for a refund.
One ring. Every signal.
It works quietly in the background, day and night, and turns what it notices into clear, simple insight in the free companion app. No subscription. No monthly fee. Every feature included.
Time asleep, deep, light and REM stages, and a nightly score, so you can see what a good night actually looks like for you.
Continuous readings, day and night, with your resting rate front and centre.
Periodic readings logged overnight, so patterns are easy to spot.
Steps, distance and calories, tracked automatically from your hand.
Skip to the next short video with a tap of two fingers. No reaching for your phone.
Group shots and tripod selfies, taken without running back to the timer.
App views are illustrative. Rivo Ring is a wellness device; readings are estimates, not medical measurements.
Hands-free
Built-in motion gestures turn the ring into a quiet remote for the moments your hands are busy, or your phone is out of reach.
Tap your thumb and finger together twice to jump to the next short video. Made for the treadmill, the kitchen and the couch.
Trigger your phone's camera from across the room for group photos and tripod shots, without running back to the timer.
Gesture controls work through the free companion app. Supported phones and apps may vary.
The details
A day with Rivo
No charging every night, no screen to check. Just a ring that quietly keeps up with you.
Open the app to your sleep score and how long you spent in each stage.
Walk to lunch and distance and calories add up without a second thought.
Double-tap to skip to the next video while you cook, stretch or train.
Heart rate and blood oxygen are logged quietly while you sleep.
Ring vs watch
Questions
Can't find your answer? Reach us any time through the contact page.
No. The companion app is free, and everything the ring tracks is included: sleep stages, heart rate, blood oxygen and activity. Some popular smart rings charge a monthly membership just to see your full sleep and heart data. With Rivo, you pay once for the ring and that's it.
Sizes run 7 to 13 in standard US ring sizes. Tap Size guide next to the size buttons for two easy ways to measure at home. Smart rings should sit slightly snugger than a regular ring so the sensors stay in contact with your skin, and if you're between sizes, go up one.
Up to 10 days per charge, depending on how you use it. Continuous heart rate and blood oxygen tracking use more power than sleep and steps alone. When it's low, pop it in its case, which charges over USB.
Yes. It's rated IP68 for water and dust resistance, so handwashing, showers and rain are fine. We'd take it off for hot tubs, saunas and diving, since heat and pressure are harder on any sealed electronics.
Gestures run through the free companion app. Double-tap your thumb and finger to skip to the next short video, or use a gesture to trigger your phone's camera. Supported phones and apps may vary.
Charge it in the case, download the free QRing app, and pair over Bluetooth. It works with Android 5.1 and above and iOS 8.0 and above.
They're estimates, not clinical measurements. Rivo Ring is built for spotting patterns over weeks, like how your sleep is trending or whether you're moving more, rather than precise single readings. It isn't a medical device.
Orders are processed within 1 to 3 business days, and you'll get a tracking number by email once yours ships. Shipping is free on orders over $75, so any bundle of two or more rings ships free within Canada.
You have 30 days from delivery to send it back for a refund of the purchase price. Return shipping is paid by the customer. Get in touch through the contact page first and we'll send you the return details.
30-day money-back guarantee
Wear it to bed, to the gym, in the shower. If it isn't for you, send it back within 30 days for a refund.
Free shipping on 2+ rings · Ships in 1–3 business days
