Oura
Oura Ring 4
$349
Released 2024-10
Best Smart Rings · head-to-head
Oura Ring 4 vs Amazfit Helio Ring
A sourced, side-by-side comparison. Amazfit Helio Ring is cheaper at $149.99. Every spec and price links to its source.
Amazfit
Amazfit Helio Ring
$149.99Cheaper
Released 2024-05
Which is better: the Oura Ring 4 or Amazfit Helio Ring?
On the specs we track, they're closely matched. The Amazfit Helio Ring is the cheaper at $149.99.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Oura Ring 4 | Amazfit Helio Ring |
|---|---|---|
| US price | $349 | $149.99 |
| Brand | Oura | Amazfit |
| Released | 2024-10 | 2024-05 |
| Material | Titanium (non-allergenic inner and outer surfaces) | Titanium alloy outer, resin inner |
| Weight (g) | 3.3-5.2 | 3.65-3.82 |
| Battery days | 8 | 4 |
| Spo2 | Yes | Yes |
| Temperature sensor | Yes | Yes |
| Ecg | No | No |
| Subscription required | Yes | No |
| Water resistance (m) | 100 | 100 |
Sources — Oura Ring 4: ouraring.com (verified 2026-06-15). Amazfit Helio Ring: us.amazfit.com (verified 2026-06-15).
What's the difference between the Oura Ring 4 and Amazfit Helio Ring?
Where the two actually differ on the specs we track (4 of 8). Matching specs are omitted.
- Material: Oura Ring 4 Titanium (non-allergenic inner and outer surfaces) vs Amazfit Helio Ring Titanium alloy outer, resin inner
- Weight (g): Oura Ring 4 3.3-5.2 vs Amazfit Helio Ring 3.65-3.82
- Battery days: Oura Ring 4 8 vs Amazfit Helio Ring 4
- Subscription required: Oura Ring 4 true vs Amazfit Helio Ring false
What reviewers say
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
Oura Ring 4
Four testers (Tom's Guide, TechRadar, Engadget, Digital Trends) all hands-on-tested the Oura Ring 4 and call it the best smart ring you can buy, praising the all-titanium comfort and companion app. Every source flags the mandatory ~$5.99/month subscription; easy scratching and step/calorie/activity-detection accuracy are the recurring doubts across reviews. (4 sourced reviews, 4 lab-tested.)
Praised: Comfortable all-titanium design with flush, recessed sensors; Excellent companion app with clear data presentation; Long real-world battery life (roughly 5.5-7 days per charge).
Flagged: Mandatory ~$5.99/month subscription to unlock most features; Step / calorie / activity-detection accuracy lags a smartwatch; Titanium surface scratches easily within weeks.
Amazfit Helio Ring
No sourced tester review yet.