Smart rings, compared
A smart ring packs sleep, recovery and heart tracking into a screenless band of titanium — no display, no buttons, a battery measured in days and nothing to charge nightly. It has become the quiet counterweight to the smartwatch: always on your body, never on your attention.
The field splits along two lines. Health rings — Oura, whose patents and market share define the category, against subscription-free challengers like RingConn and Ultrahuman — compete on sensors, battery and whether your data costs a monthly fee. A second, newer front treats the ring as an input device: voice capture and gesture control for AI glasses and XR.
Every smart ring in the index
| Device | Year | Status | Price | Notable hardware |
|---|---|---|---|---|
| Oura Ring 5 | 2026 | SHIPPING | $399 | PPG heart rate (next-gen) · Skin temperature · Blood oxygen (SpO₂) · Blood pressure (signals) |
| Samsung Galaxy Ring | 2024 | SHIPPING | $399 | PPG heart rate · Skin temperature |
| Ultrahuman Ring Pro | 2026 | PREORDER | $479 | PPG heart rate · Blood oxygen (SpO₂) · Skin temperature |
| RingConn Gen 3 | 2026 | SHIPPING | $349 | PPG heart rate · Skin temperature · Blood oxygen (SpO₂) · Blood pressure (insights) |
| Pebble Index 01 | 2026 | SHIPPING | $99 | Button |
| Circular Ring 2 | 2026 | SHIPPING | $349 | ECG (single-lead) · PPG heart rate · Blood oxygen (SpO₂) · Skin temperature |
| Even Realities R1 | 2025 | SHIPPING | $249 | PPG heart rate · Blood oxygen (SpO₂) · Skin temperature · Touch / tap input |
| Vital Signals Signal Ring | 2026 | PREORDER | $399 | PPG heart rate · Blood pressure (cuffless) |
| Sandbar Stream Ring | 2025 | PREORDER | $249 | Touch / tap input · Haptics |
| KiWear Smart Ring | 2025 | ANNOUNCED | TBD | Gesture sensing · Touch / tap input · Voice control |
| Muse Wearables Ring One 2.0 | 2026 | ANNOUNCED | TBD | PPG heart rate · Blood pressure (cuffless) |
Shipping now or on preorder
The world's smallest smart ring — roughly 40% smaller, week-long battery and new blood-pressure signals.
Galaxy-tethered ring for sleep, activity and cycle tracking, and the first smart ring cleared by the FDA for over-the-counter sleep-apnea detection, arriving in a fall 2026 update.
Subscription-free flagship answering Oura with a 15-day battery, redesigned heart-rate sensing and the Jade real-time biointelligence engine; shipping slipped to August 2026 over unit-by-unit quality checks.
Titanium third-gen ring adding vascular and blood-pressure insights plus on-finger vibration alerts, keeping the 14-day battery and no subscription.
Minimalist single-button ring with a mic that captures voice memos transcribed privately on your phone — no health tracking.
Titanium ring built around an on-finger single-lead ECG with AFib detection and PPG-based blood-pressure estimation.
Zirconia-ceramic companion ring that discreetly controls Even Realities' G2 glasses while tracking heart rate, HRV, SpO₂, temperature, activity and sleep, with a four-day battery.
Cuffless smart ring that takes direct systolic and diastolic blood-pressure readings from an optical finger sensor without calibration, focused solely on cardiovascular data.
Voice-first AI ring — capture thoughts by speaking, or whispering, into your hand; preorders start at $249 with shipping planned for summer 2026.
Next generations on the horizon
Announced & rumored
Gesture-and-voice input ring built as a controller for AI glasses and XR, developed with Qualcomm.
Titanium follow-up to Muse's much-delayed first ring, promising cuffless blood pressure, AFib and sleep-apnea detection and NFC payments, with an Indiegogo campaign opening 4 August.
Popular comparisons
- Oura Ring 5 vs Samsung Galaxy Ring→
- Oura Ring 5 vs Ultrahuman Ring Pro→
- Oura Ring 5 vs RingConn Gen 3→
- Ultrahuman Ring Pro vs RingConn Gen 3→
- Oura Ring 5 vs Circular Ring 2→
- Oura Ring 5 vs WHOOP 5.0→
- Compare any two devices side by side→
Common questions
Do smart rings require a subscription?
Some do, and it is one of the sharpest dividing lines in the category. Oura requires a monthly membership for full insights, while challengers like Ultrahuman, RingConn and Circular sell subscription-free rings where every metric is included in the hardware price.
What does a smart ring actually track?
Sleep stages, heart rate and heart-rate variability, blood oxygen, skin temperature and activity — continuously, from your finger, on a battery measured in days. There is no screen by design: the ring collects, the phone app interprets.
Which smart rings can you buy right now?
9 of the 11 smart rings in the index are shipping or on preorder: Oura Ring 5 ($399), Samsung Galaxy Ring ($399), Ultrahuman Ring Pro ($479), RingConn Gen 3 ($349), Pebble Index 01 ($99), Circular Ring 2 ($349), Even Realities R1 ($249), Vital Signals Signal Ring ($399), Sandbar Stream Ring ($249).
← ALL 062 DEVICESIndependent index — figures are approximate and editorial, not official spec sheets. Nobody pays for placement. Methodology. Last reviewed 2026-08-01.