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Don't fall for the Oura Ring 4 upgrade — the Ring 3 has the same sleep tracking tech and is $150 cheaper

Don't fall for the Oura Ring 4 upgrade — the Ring 3 has the same sleep tracking tech and is $150 cheaper

Tom's Guide17-06-2025
From Oura to Garmin, Eight Sleep and Apple I've tested my fair share of sleep trackers over the past few months, but the one I always recommend to friends looking to optimize and learn more about their ZZZs for a reasonable price? It's the Oura Ring.
While no sleep tracker is 100% accurate every night, in my experience the Eight Sleep Pod 4, aka our best smart bed of the year, and Oura Ring provide the most reliable data.
I began tracking my sleep with the Oura Ring 3 at the start of this year and have recently upgraded to the Oura Ring 4. While there are noticeable improvement (like the Ring 4's more durable finish), if you're using the ring purely as a sleep tracker, I recommend saving your pennies and opting for the previous generation while stocks last. Here's why...
While the underlying sleep tracking tech remains the same, the key updates Oura has introduced with the fourth generation ring revolve around improved battery life and sensor accuracy, and a redesign focused on comfort and better durability.
The Ring 4 also introduces "Smart Sensing" technology and a wider size range. Oura Ring's "Smart Sensing" is powered by an advanced algorithm that works alongside the research-grade sensors within Oura Ring 4 to respond to each member's unique finger physiology, including the structure and distinct features of your finger (i.e. skin tone, BMI, and age).
Battery life has also been improved with the Oura Ring 4. Oura Ring 3 claimed to last up to seven days between charges, though in my experience and that of our other reviewers, four to five days is a more accurate battery life window. However, I have used the Oura Ring 4 for four days and it has 48% charge remaining, suggesting it will power through eight days.
Finally, the Oura Ring 4 has a more robust titanium design. I noticed the Oura Ring 3 start to scratch within the first few days of wearing it, so this is certainly a welcome upgrade.
Oura Ring 3: was from $299 now from $199 at OuraThe Oura Ring 3 was released in 2021. It comes in two styles — heritage (a plateau design) and horizon (sleek circular design). In current sleep sales, there's $100 off the Oura Ring 3 while stocks last.
Oura Ring 4: from $349 at Oura The Oura Ring 4 replaced the Ring 3 as of October 2024. This new-and-improved smart ring is available in six different smooth metal finishes including (in ascending price order) silver, black, brushed silver, stealth, gold and rose gold and additional ring sizes from 4 to 15 rather than 6 to 13. Prices start from $349 and reach $499.
If you're looking for a comprehensive sleep tracker but don't want to splash more than $300, here's why I recommend you shop the Oura Ring 3 over the Oura Ring 4, after testing both myself...
With $100 off all sizes now, you can get the Oura Ring 3 for between $199 and $349 (was $299 to $449). The Heritage style Oura Ring 3 is $199 in silver and black and $279 in stealth, and the Horizon design is $249 in black, $279 in stealth and brushed titanium and $349 in gold.
Meanwhile the Oura Ring 4 sits at MSRP of $349 in silver and black, $399 in brushed silver and stealth, and $499 in gold and rose gold.
No matter the model or color you're going for, you'll end up paying at least $150 more for the Ring 4. Add on top Oura's subscription fee ($5.99 per month or $69.99 per year) and this sleep tracker becomes a significant financial commitment.
For me, the difference in sleep tracking functionality between Gen 3 and Gen 4 doesn't quite justify the $150 price difference. So, to save cents where you can I recommend shopping the Ring 3 while stocks last.
While it is now a popular all-round health tracker worn by wellness enthusiasts, the Oura Ring has its roots in the sleep tracking market and has proved itself as a comprehensive snooze gadget.
The Oura Ring 3 might not be the newest, most advanced sleep tracker on the market after being around for the best part of four years, but it still gives a reliable picture of how well you sleep each night.
It keeps tabs on how long it takes for you to fall asleep, how long you spend in each sleep stage, how long you sleep overall and how 'efficient' your sleep has been. The Oura Ring 4 is said to be built with more accurate sensors, but there are no new metrics covered in your nightly sleep report.
I've observed similar discrepancies in time spent asleep when comparing data given by the Eight Sleep Pod 4 smart mattress cover with that from both the Oura Ring 3 and Oura Ring 4.
Between the Ring 3 and the Eight Sleep Pod I observed a discrepancy of between 16 and 44 minutes in time spent asleep. With the Ring 4 and Eight Sleep Pod, the discrepancy was between 11 and 36 minutes.
Even with the latest wellness tech, measuring exact sleep time at home is a difficult task as you're literally in an unconscious state. Considering the differences in sleep time mentioned above are only a matter of minutes, I recommend the more affordable Ring 3.
While one of the key upgrades between the two rings is focused on comfort, I haven't noticed a major difference between the two rings. Both are comfortable overnight. Sitting on your finger rather than your wrist, I find the Oura Ring more comfortable overnight compared with wrist-worn trackers that can feel claustrophobic in bed.
In fact, the Oura Ring 3 is slimmer than the Ring 4 in the size I wear (size 9). The Ring 3 measures 2.57mm thick on the sides and 2.97mm thick on the "top" compared to 2.88mm all the way around with the Ring 4, so it feels less clumpy on your finger.
In terms of durability, if you're wearing the ring purely as a sleep tracker, the Oura Ring 3 won't tarnish in bed. It is only likely to scratch if you're wearing it as an all-day health tracker.
Having tested both the Oura Ring 3 and Ring 4, it's clear to see the Ring 4 is an upgraded, more durable product with longer battery life and more accurate biometric sensors. However, if you want an excellent smart ring for sleep tracking, you're in capable hands with the Oura Ring 3, which you can buy right now for $150 less.
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