Smart Rings / Amazfit Helio Ring (2024) vs Oura Ring 4 (2024)
Amazfit Helio Ring (2024) vs Oura Ring 4 (2024)
Oura Ring 4 (2024)
The widest size range Oura sells, now heavily discounted — same subscription, though.
Wins overall by 0.9 points
Quick Verdict
A 0.9-point gap makes the Oura Ring 4 (2024) the straightforward choice here. The widest size range Oura sells, now heavily discounted — same subscription, though.
The Amazfit Helio Ring (2024) and Oura Ring 4 (2024) are both current-generation smart Ring models, and the Amazfit Helio Ring (2024) is $99 cheaper than the Oura Ring 4 (2024) ($149.99 vs $249). On Subscription Freedom, the Amazfit Helio Ring (2024) leads (9.5 vs 2.0/10) — how much of the ring keeps working with no recurring payment — the category's defining trap. On Sizing & Fit, the Oura Ring 4 (2024) leads (8.5 vs 3.0/10) — how many sizes exist, how good the sizing kit is, and how forgiving the exchange policy is. On Battery Life, the Oura Ring 4 (2024) leads (7.0 vs 4.5/10) — real days between charges with continuous sensing on, plus what the charging case adds. Overall, the Oura Ring 4 (2024) scores 7.4/10 across our 8 scoring categories versus 6.5/10 for the Amazfit Helio Ring (2024). Below, we break down the full spec sheet, category-by-category scores, and exactly who should buy which one.
Side-by-Side Comparison
| Spec | Amazfit Helio Ring (2024) | Oura Ring 4 (2024) |
|---|---|---|
| Price | $149.99 | $249.00 |
| Release Year | 2024 | 2024 |
| Battery Life (claimed) (days) | 4 | 8✓ |
| Battery, In Practice | Amazfit publishes 'up to 4 days' — the shortest claim in this comparison, and it is the headline figure, so continuous SpO2 and temperature sensing pull it down from there. Wireless charging takes about 1 hour 40 minutes. | Oura publishes 5-8 days and states outright that it varies with ring size, app settings and activity level. Smaller sizes are nearer 5. Charging takes 20-80 minutes depending on how flat it is. |
| Subscription | None. Amazfit states no subscriptions are required, and Zepp Aura Premium (sleep sounds, detailed sleep reports, AI chat) is included free rather than sold separately. | Required in practice. $5.99/month or $69.99/year after one free month, on exactly the same terms as the Ring 5 — the membership is per account, not per ring, so upgrading later does not cost a second subscription. |
| 3-Year Cost of Ownership ($) | 149.99✓ | 458.97 |
| Sizes Offered | Three sizes only — 8 (24mm), 10 (25.7mm) and 12 (27.3mm). If your finger falls between them, there is no ring for you; every rival here offers seven to twelve sizes. | US 4-15, no half sizes — the broadest range here, and the reason to buy the older generation if your finger is very small or very large |
| Sizing Kit | Not offered in the way rivals do it — with only three sizes Amazfit publishes inner diameters instead. That removes the kit wait but makes a poor fit far more likely. | Free plastic sizing kit ships before the ring; wear the sizer at least 24 hours including overnight. Budget about a week before the real ring is ordered. |
| Returns & Size Exchange | Not published on Amazfit's US product page; the store's standard terms apply and should be checked before ordering. | Oura does not publish a return window on its warranty page. The 1-year limited warranty excludes scratches, dents and batteries, and secondhand purchases from unauthorised resellers are not covered at all. |
| Measured vs Inferred | PPG optical sensor for heart rate and blood oxygen, plus a genuine EDA (electrodermal activity) sensor for stress — one of the few rings here where 'stress' has a dedicated sensor behind it rather than being inferred from HRV alone. Readiness and sleep scores are still derived. | Green plus infrared LEDs for continuous heart rate and HRV, red plus infrared for blood oxygen reported overnight rather than continuously, an NTC skin-temperature sensor and an accelerometer. Readiness, Stress and Resilience are derived scores on top of those signals. |
| FDA Clearance | None published. General wellness product; the EDA sensor is not a cleared medical measurement. | None published. Oura markets the ring and app as general wellness, not as a medical device. |
| Water Rating | 10ATM | Water resistant to 100m/328ft |
| Phone Support | iOS and Android through the Zepp app | iOS and Android, full feature parity |
| Charger & Data Export | Wireless charging dock, and Amazfit's own US page states the USB-C cable is not included in the box — you supply your own. Export: not published by the manufacturer. | Proprietary size-specific dock plus USB-C cable in the box; the Ring 5 charger is a different part. Export: not published as a one-click history download; Oura documents a personal-access-token Cloud API. |
| Warranty | 12 months | 12 months |
| Colors | Titanium | Silver, Black, Brushed Silver, Stealth, Gold, Rose Gold |
Category Scores
Subscription Freedom
The Amazfit Helio Ring (2024) leads clearly here, 9.5 against 2.0 — a 7.5-point margin on how much of the ring keeps working with no recurring payment — the category's defining trap. If that is what you are buying for, the Oura Ring 4 (2024) does not close the gap elsewhere.
Sleep Tracking
The Oura Ring 4 (2024) leads clearly here, 9.3 against 7.0 — a 2.3-point margin on sleep staging depth, overnight accuracy and how usable the morning report is. If that is what you are buying for, the Amazfit Helio Ring (2024) does not close the gap elsewhere.
Health Sensing
The Oura Ring 4 (2024) leads clearly here, 8.2 against 6.5 — a 1.7-point margin on what the sensors genuinely measure — heart rate, SpO2, temperature, ECG — rather than infer. If that is what you are buying for, the Amazfit Helio Ring (2024) does not close the gap elsewhere.
Battery Life
The Oura Ring 4 (2024) leads clearly here, 7.0 against 4.5 — a 2.5-point margin on real days between charges with continuous sensing on, plus what the charging case adds. If that is what you are buying for, the Amazfit Helio Ring (2024) does not close the gap elsewhere.
Sizing & Fit
The Oura Ring 4 (2024) leads clearly here, 8.5 against 3.0 — a 5.5-point margin on how many sizes exist, how good the sizing kit is, and how forgiving the exchange policy is. If that is what you are buying for, the Amazfit Helio Ring (2024) does not close the gap elsewhere.
App & Data
The Oura Ring 4 (2024) leads clearly here, 9.0 against 7.0 — a 2.0-point margin on app stability, insight depth, platform parity and whether you can get your history out. If that is what you are buying for, the Amazfit Helio Ring (2024) does not close the gap elsewhere.
Durability
The Amazfit Helio Ring (2024) and Oura Ring 4 (2024) are level here, at 7.5/10 each. finish scratch resistance, water rating in practice, and whether the finish is warrantied is not what separates these two — look to the categories where the scores diverge.
Value
The Oura Ring 4 (2024) leads clearly here, 7.5 against 7.0 — a 0.5-point margin on what the ring delivers against its total cost of ownership, not just its sticker price. If that is what you are buying for, the Amazfit Helio Ring (2024) does not close the gap elsewhere.
Best For
Choose the Amazfit Helio Ring (2024) if…
- • Subscription Freedom matters most to you — the Amazfit Helio Ring (2024) scores 9.5/10 here (how much of the ring keeps working with no recurring payment — the category's defining trap).
- • You want to spend less — it's $99 cheaper.
- • Your main use case is no-subscription.
Choose the Oura Ring 4 (2024) if…
- • Sizing & Fit matters most to you — the Oura Ring 4 (2024) scores 8.5/10 here (how many sizes exist, how good the sizing kit is, and how forgiving the exchange policy is).
- • Battery Life matters most to you — the Oura Ring 4 (2024) scores 7.0/10 here (real days between charges with continuous sensing on, plus what the charging case adds).
- • Sleep Tracking matters most to you — the Oura Ring 4 (2024) scores 9.3/10 here (sleep staging depth, overnight accuracy and how usable the morning report is).
- • App & Data matters most to you — the Oura Ring 4 (2024) scores 9.0/10 here (app stability, insight depth, platform parity and whether you can get your history out).
- • Your main use case is womens-health.
Pros & Cons
Amazfit Helio Ring (2024)
Pros
- +$149.99 with no subscription — the cheapest ring here from a manufacturer with a real wearables business behind it
- +An actual EDA sensor for stress rather than an HRV-derived guess
- +10ATM water rating matches rings costing twice as much
- +Zepp Aura Premium is bundled, not upsold
Cons
- −Three sizes, full stop — 8, 10 and 12. This is the single biggest reason to buy something else
- −Four-day battery is the worst here by a wide margin; RingConn's cheapest ring does ten
- −Amazfit's own page says no USB-C cable is in the box
- −Data is most useful if you already own an Amazfit watch; standalone the Zepp app is thinner than Oura's
- −The Helio Ring 2 has been confirmed for the second half of 2026, so this is end-of-cycle hardware
Oura Ring 4 (2024)
Pros
- +Sizes 4 to 15 — if the Ring 5's 6-13 window excludes you, this is the Oura that fits
- +Now routinely $249 in silver or black, $100 under its own list price, for sensing that is a generation behind at most
- +Recessed sensors mean no protruding domes pressing into the finger, unlike the Circular Ring 2
- +Same app, same membership, same iOS/Android parity as the Ring 5
Cons
- −The $5.99/month membership still applies, so three years costs $458.97 even at the discounted hardware price
- −Noticeably chunkier than the Ring 5 — that is the whole reason the Ring 5 exists
- −Discounted stock is concentrated in Silver and Black; Gold and Rose Gold still list at $499
- −Warranty covers manufacturing defects only, not the scratches titanium picks up in normal wear
- −Amazon listings are per size and per colour, so the ASIN you click must match the size you actually need
Shop by Need
FAQs
Is the Amazfit Helio Ring (2024) or Oura Ring 4 (2024) better overall?+
Based on our 8-category scoring, the Oura Ring 4 (2024) comes out ahead overall. See the full breakdown in the scores section above — the right pick still depends on which categories matter most for your use case.
Which is better for Subscription Freedom, the Amazfit Helio Ring (2024) or the Oura Ring 4 (2024)?+
The Amazfit Helio Ring (2024) scores higher on Subscription Freedom (9.5/10 vs 2.0/10) — how much of the ring keeps working with no recurring payment — the category's defining trap.
Which is better for Sizing & Fit, the Amazfit Helio Ring (2024) or the Oura Ring 4 (2024)?+
The Oura Ring 4 (2024) scores higher on Sizing & Fit (8.5/10 vs 3.0/10) — how many sizes exist, how good the sizing kit is, and how forgiving the exchange policy is.
Which is better for Battery Life, the Amazfit Helio Ring (2024) or the Oura Ring 4 (2024)?+
The Oura Ring 4 (2024) scores higher on Battery Life (7.0/10 vs 4.5/10) — real days between charges with continuous sensing on, plus what the charging case adds.
Which is better for Sleep Tracking, the Amazfit Helio Ring (2024) or the Oura Ring 4 (2024)?+
The Oura Ring 4 (2024) scores higher on Sleep Tracking (9.3/10 vs 7.0/10) — sleep staging depth, overnight accuracy and how usable the morning report is.
Is the Amazfit Helio Ring (2024) worth the price difference over the Oura Ring 4 (2024)?+
The Amazfit Helio Ring (2024) is the cheaper option at $149.99 versus $249. Whether the pricier model is "worth it" depends on how much you value its lead in Subscription Freedom.
Which is better suited to my use case?+
The Amazfit Helio Ring (2024) is the better fit if you mainly care about no-subscription. The Oura Ring 4 (2024) is the better fit for womens-health.
What's the warranty on the Amazfit Helio Ring (2024) vs the Oura Ring 4 (2024)?+
The Amazfit Helio Ring (2024) ships with a 12-month warranty; the Oura Ring 4 (2024) ships with a 12-month warranty. Always confirm current terms on the manufacturer's site before buying.
Should I wait for the next model instead of buying either of these?+
If either model is more than two years old, a successor may be close — check the "Latest Model" link on each product page. Otherwise, both are current, well-supported options and there's no strong reason to wait.
Premium Option
Samsung Galaxy Ring (2024) — $299.99
Specifications and prices for both products last verified . Scores are calculated from published specifications — see how we compare products.