VITALITY & HEART

How well areyou holding up?

QALO reads your resting heart rate, HRV, blood oxygen, and skin temperature and turns it into one Vitality score for how well your body is recovering.

[ - Features - ]

Four vitals. One score. No guesswork.

Resting Heart Rate

A lower, steady reading points to stronger cardio fitness. Watch the trend over weeks, not any single morning, because stress, alcohol, and illness can nudge it up overnight.

Heart Rate Variability

The tiny variations in time between each heartbeat, and the clearest signal your body gives about whether it's recovered. There's no universal target, only yours — so QALO does the comparison for you against your personal baseline.

Blood Oxygen (SpO2)

The percentage of oxygen your red blood cells are carrying. Most healthy adults sit between 95 and 100%, so steady readings in that range mean your body is fueling itself efficiently.

Skin Temperature

Your skin's temperature relative to your personal baseline. Small shifts can flag an oncoming illness, a hard night, or where you are in your cycle.

Built on

915,000

hours of real data

QALO monitors your vital signs with precision. We studied hundreds of thousands of hours of cardiovascular data to give you vital insights with zero monthly fees. This is heart tracking that never misses a beat.

[ - Testimonials - ]

Real nights real people

“So far, I’ve had it for less than a week, but I really love having an alternative to wearing an Apple Watch everywhere I go. Especially when I sleep to get my metrics. Wish I would’ve bought one of these years ago. 100% recommend to anyone.”

David B.

Verified buyer

QALO SR-2 Brushed Silver

“The smart ring from QALO definitely does its job! I am able to track my sleep and cycle with no issues. I am able to reach my goals and makes me aware of my stress levels throughout the day.”

Janine R.

Verified buyer

QALO SR-2 Brushed Gold

"I'm obsessed with my ring! I am a perimenopausal mom and nurse practitioner. It has given me great insight into my sleep and is so accurate! I love the ring covers it came with. I have told all my friends to get one."

Katie L.

Verified buyer

QALO SR-2 Brushed Silver

“I love my QALO slim smart ring. It’s so accurate, light weight, and was easy to pair. The charge lasts a really long time and tracks so many things!! The shipping was fast and best of all, you don’t have to pay a subscription for the app.”

Taylor R.

Verified buyer

QALO SR–2 Brushed Gold

“Exactly what I was hoping for without having to break the bank. Lightweight and easy to wear. Battery life is good as well. I’m on day 3 and still at 60 something % charge. I did size up and it fits perfectly on my ring finger of my non dominant hand.”

Cassidy H.

Verified buyer

QALO SR–2 Brushed Silver

Everything included. Nothing recurring.

Every metric tracked with no monthly fee.
Stored on US servers. Never sold. Yours forever.
Use your funds to invest in subscription-free health tracking.