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Meet QRNT Slim, the next-generation Smart Ring by QALO. QRNT (pronounced “current”) stands for QALO Ring with NanoTechnology, and it’s equipped with upgraded, ultra-precise sensors that deliver more health-tracking power in a 25% thinner, featherlight ring you’ll barely notice you’re wearing. With QRNT Slim, you can track key health metrics including sleep, stress, movement and workouts, heart rate variability (HRV), oxygen saturation (SpO2), skin temperature, women’s health, and more. All your progress is monitored in the free and secure QALO app, designed to be empowering without ever feeling overwhelming. Access to the app is completely free, with no subscription charges, and QRNT Slim is compatible with both Android and iOS devices.

Meet QRNT Slim, the next-generation Smart Ring by QALO. QRNT (pronounced “current”) stands for QALO Ring with NanoTechnology, and it’s equipped with upgraded, ultra-precise sensors that deliver more health-tracking power in a 25% thinner, featherlight ring you’ll barely notice you’re wearing. With QRNT Slim, you can track key health metrics including sleep, stress, movement and workouts, heart rate variability (HRV), oxygen saturation (SpO2), skin temperature, women’s health, and more. All your progress is monitored in the free and secure QALO app, designed to be empowering without ever feeling overwhelming. Access to the app is completely free, with no subscription charges, and QRNT Slim is compatible with both Android and iOS devices.

Meet QRNT Slim, the next-generation Smart Ring by QALO. QRNT (pronounced “current”) stands for QALO Ring with NanoTechnology, and it’s equipped with upgraded, ultra-precise sensors that deliver more health-tracking power in a 25% thinner, featherlight ring you’ll barely notice you’re wearing. With QRNT Slim, you can track key health metrics including sleep, stress, movement and workouts, heart rate variability (HRV), oxygen saturation (SpO2), skin temperature, women’s health, and more. All your progress is monitored in the free and secure QALO app, designed to be empowering without ever feeling overwhelming. Access to the app is completely free, with no subscription charges, and QRNT Slim is compatible with both Android and iOS devices.

Oura Ring 4 brings you closer to what matters most — your health. With an updated all-titanium design, this smart ring features Smart Sensing, a new sensing platform that doesn’t just measure your biometrics but also adapts to you. It provides insights into over 50 biometrics including sleep, readiness, activity, heart health, stress, metabolic health and women’s health.

The Oura Ring Gen3 and the Oura Membership ($5.99/mo plus tax) work hand-in-hand to help you feel your best. Monitor your sleep, activity levels, temperature, stress, heart rate, and more with the most trusted Smart Ring. Whether you’re focusing on your fitness or want to improve your sleep, Oura helps you take control of your health — in style.
| Pros for QALO - QRNT Slim Smart Ring Size 11 - Silver - (2025) | |||
|---|---|---|---|
| There were no pros for this product— | There were no pros for this product— | Sleep Tracking, Overall Performance, Comfort, Battery Life, Data Accuracy | Sleep tracking, Battery life, Comfortable, Accuracy, Design |
| Cons for QALO - QRNT Slim Smart Ring Size 11 - Silver - (2025) | |||
| There were no cons for this product— | There were no cons for this product— | Size, Scratch Resistance, Connectivity | Size, Subscription, Expensive, Price, Scratch resistance |
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
I have enjoyed my "current" smart ring. There are times that I don't want to wear my @pple w@tch- I am a Swatch watch collector- and the Slim QRNT gives me a good alternative to collect my health data.
This review is from QALO - QRNT Slim Smart Ring Size 8 - Gold - (2025)
Posted by JanettaP