To say that the Oura Ring is an advancement in technology is an understatement. The ring features 3 sensors – the infrared photoplethysmography sensor (PPG) captures your heart rate and respiration, the negative temperature coefficient (NTC) sensor assesses your body temperature, and the 3D accelerometer analyzes your movements. Using this information, the Oura Ring logs your steps, workouts, naps, sleeping patterns, and calories burned. It analyzes your respiratory rate, heart rate, heart rate variability (variations in the time between each heartbeat), and your level of physical activity. It then provides an assortment of graphs and charts displaying ratings and visualizations of the quality of your sleep, your physical activity, and your overall readiness for the day’s activities ahead.
The Oura Ring fits within a growing list of competitors such as the Apple Watch, Fitbit Charge, Garmin Venu, Letsfit Fitness Tracker, Coros Pace, Whoop, Garmin Instinct, Samsung Galaxy Watch, and others. What sets the Oura Ring apart is that it fits around your finger instead of your wrist. Since it only has to be recharged for an hour every 5-7 days, it requires very little overhead and attention. In a way, you could say that it is practically invisible, as you don’t have to take it off to shower, swim, workout, or practically anything except the occasional charging.
I have been an Apple Watch user since the first day it arrived on the market. Where I found the Apple Watch to be somewhat lacking is in the arena of sleep tracking. When the Apple Watch is paired with the AutoSleep app in the App Store, it more closely equals the capabilities of the Oura. Particularly, you do not have to tell the device when you are going to bed and getting up (the AutoSleep app does this work for you, as does the Oura Ring). Although it is not perfect, it is pretty close. I have worn both the Apple Watch and the Oura Ring to sleep on many occasions to compare their readings. This does require me to charge my Watch once before going to and again upon awakening. Although they have agreed exactly on occasion, there is usually a variation of several minutes. It is difficult to say for sure which is more accurate, as both present numbers that closely match my experiences.
Below is my video review, consider watching it to get a richer experience with the Oura Ring review.
Overall
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Design
(5)
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Build Quality
(5)
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Accuracy
(5)
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Flexibility
(5)
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Convenience
(5)
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Warranty
(4)
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Price
(3.5)
Summary
The Oura Ring packs incredible capabilities into a very small, convenient package. If your primary need is sleep tracking, the Oura Ring offers the best capabilities on the market at the time of this writing.
Pros
- Excellence sleep tracking
- Stylish
- Good accuracy
- Very convenient
- Low maintenance
Cons
- It is not cheap
- Oura Ring 3 requires a monthly membership fee
- Battery life and replacement are unknown factors
At the time of this writing, the Apple Watch does not track REM sleep information. I find this aspect of the Oura Ring particularly helpful. As someone who suffers from chronic insomnia, I have come to rely on the information given to me from Oura as an essential part of my life and health. As soon as I get out of bed, I reach for my iPhone, launch the Oura app, and it immediately begins downloading the night’s sleep information to the phone. It then processes the sleep information and within seconds provides summary information about the amount of time spent in bed, asleep, in light sleep, deep sleep, and red sleep. Its heart rate variability readings also contribute to its assessment of the quality of my sleep.
As someone who architects and builds technology and data management systems for my day job, if I do not get enough sleep, I know that I will have challenges solving really complex problems that day. After months of daily use of the Oura Ring, I have come to realize that if I get an hour or more of rem sleep and an hour or more of deep sleep, I will be set for the day. These numbers seem to be more important to me than the total number of hours slept. Even if I sleep plenty of hours but I got below an hour of deep sleep, I will have some challenges ahead that day. If both of those numbers fall far short of those goals, I will need to schedule a nap in my day or hold off my most critical thinking challenges for another day.
I bought the Oura Ring 2 before the third version was available, and have been quite happy with its results. I was presented with the opportunity to upgrade to the Oura Ring 3 for a 25% discount, which also included a lifetime membership of its monthly subscription service (that otherwise costs $5.99 per month, as of this writing). However, since I had just shelled out $400 for a higher-end ring finish just a few months before, I was not willing to turn around and purchase the upgrade. The Oura community of users has been vocal about the new monthly fee to access to the same data that is free on the generation 2 ring. Despite the new monthly membership fee, if I did not already have the Oura Ring 2, I would purchase the third generation and would fit that monthly membership fee into my budget.
I have come to believe that the Oura Ring is the best tool on the market for sleep tracking. Although it can do many other things, if tracking your sleep is a high priority, the Oura Ring should be on your shortlist of purchase considerations. If sleep tracking is not a real concern, there are a variety of other products on the market that may suit your needs better, and for a more affordable price. Overall, I am very happy with the sleep tracking information provided by the Oura Ring. I have to say that the Oura Ring has become an important aspect of my daily health and fitness. For me, I Gotta Have It!
Oura Ring 3 Technical Specifications
Materials
- Durable Titanium
- PVD Coating
- Non-Allergenic, Non-Metallic, Seamless Inner Molding
- Water resistant up to 100m (more than 328 ft.)
Battery & Power
- 4 to 7 days of battery life
- Full Charge in 20 to 80 minutes
Weight & Dimensions
- Width: 7.9mm
- Thickness: 2.55mm – Size of a Wedding Band
- Weight: 4 to 6 grams (depending on ring size) – lighter than a conventional ring
Connectivity
- Bluetooth Low-Energy (Bluetooth Smart®)
- Automatic firmware updates via Oura app
- EMF-Safe and Allows Airplane Mode

