Which is better for sleep tracking?

The Oura Ring 5. Its sleep staging and readiness scores are more detailed and better validated than Amazfit's Zepp app. The Helio Ring covers the basics but gives less depth.

Is the Oura Ring 5 worth the extra money?

If you will use the sleep and recovery insights daily, yes. At $343.98 versus $162.69, you pay about $181 more for longer battery life, more sizes and a more mature app.

Which lasts longer on a charge?

The Oura Ring 5, at about 5 to 7 days. The Amazfit Helio Ring is rated up to 4 days and charges wirelessly in about 1 hour 40 minutes.

Can I swim with either ring?

Yes. Both are rated 10 ATM, so pool and open-water swimming are fine. Skip them in hot tubs and saunas.

Which fits more people?

The Oura Ring 5, which comes in a full size range including size 9. The Helio Ring only comes in sizes 8, 10 and 12, so check the sizing kit before buying.

Do I need a subscription?

Oura needs its membership for full insights. Amazfit does not charge a subscription for core tracking.

Oura Ring 5 Smart Ring vs Amazfit Helio Ring

Buy the Oura Ring 5 if you want the most polished sleep and readiness tracking and can spend about $344. Buy the Amazfit Helio Ring if budget matters: it costs $162.69 at Amazon as of November 5, 2026, less than half the Oura's $343.98 at eBay. Both are titanium smart rings with no display, so the choice comes down to software depth versus price.

Today the Amazfit Helio Ring costs $181.29 less at its best price.

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