The world of wearable technology has officially moved beyond the wrist. If you’re a UK resident looking for a discreet, sophisticated, and insightful health tracker, you’ve likely narrowed your search to the two major players redefining the smart ring category: the long-reigning champion, the Oura Ring, now in its powerful Gen 4 iteration, and the disruptive newcomer, the Evie Ring, a device built specifically with women’s health at its core. This is no longer just a battle of sleep scores; it’s a deep dive into philosophy, cost, and design, all centered on delivering meaningful health insights from your finger.
Choosing the right smart ring means balancing upfront cost against long-term subscriptions, feature sets against day-to-day comfort, and general wellness tracking against specialised data, particularly for women’s physiological needs. For too long, best fitness trackers have treated female bodies as smaller versions of male bodies, often overlooking the critical, cyclical changes that govern mood, recovery, and performance. The Evie Ring entered the market explicitly to challenge this status quo, while Oura—ever the innovator—has responded by significantly enhancing its own women’s health capabilities with the new Gen 4 model.
This comprehensive guide is designed to cut through the marketing noise and deliver clear, factual points in this Oura Ring Gen 4 vs Evie ring comparison UK relevant to the UK consumer. We’ll be examining the two most crucial factors for long-term ownership: the price model (hardware cost plus ongoing subscription) and the utility of the health data, especially as it pertains to women’s cycles, bloating, and hormonal changes. With the Oura Ring Gen 4 now officially available in the UK and the Evie Ring’s highly-anticipated international launch looming (following its successful US launch in late 2023 at $269), the decision is tougher than ever.
By the end of this report, you’ll have a clear understanding of whether Oura’s detailed, premium-subscription model is the right investment. Get ready to swap your bulky smartwatch for a sleek, finger-worn health companion that works 24/7. For more on essential compact, minimalist tech for your workspace, see our guide on minimalist mechanical keyboard setups.
The UK Price and the Subscription Question: Oura Gen 4 vs. Evie’s Subscription-Free Model
For any smart tech purchase, the total cost of ownership is often the deciding factor, and this is where the Oura Ring Gen 4 and the Movano Evie Ring present their most fundamental difference. Oura operates on a premium subscription model, whereas Evie has taken the audacious step of offering all its data and features with a one-time purchase.
Oura Ring Gen 4: The Reality of the Premium Subscription Model
The Oura Ring Gen 4 represents a premium investment from the very first purchase. In the UK, pricing begins at £349 for the Silver and Black finishes, while luxury options such as Gold and Rose Gold climb as high as £499. However, the upfront cost is only part of the financial commitment. To access Oura’s full ecosystem of advanced health insights including the Readiness Score, detailed Sleep Stages, Cycle Insights, and personalized guidance, users must maintain an active Oura Membership.
This subscription is currently priced at £5.99 per month, adding roughly £72 per year to the total cost of ownership. Although new customers are usually offered a six-month free trial, the subscription quickly becomes unavoidable for anyone who wants the complete Oura experience. Over several years of use, this recurring fee turns the Gen 4 into a notably substantial long-term investment.
Evie Ring: A One-Time Purchase With No Subscription Pressure
The Evie Ring takes a radically different and highly consumer-friendly approach to pricing. Instead of locking users into monthly fees, Evie offers full lifetime access to all health data and app features with a single upfront payment. In the US, the ring is priced at $269, which translates to an estimated UK price of around £200, depending on VAT and import duties once it officially launches in the UK. What makes this model especially attractive is the absence of any ongoing subscription at all. Every feature including cycle tracking, ovulation prediction, sleep insights, symptom analysis, and wellness summaries remains permanently unlocked without additional charges.
Over a typical three to four year wearable lifespan, this structure can save UK buyers hundreds of pounds compared to subscription-based competitors. For users who value clear ownership, predictable costs, and freedom from recurring payments, the Evie Ring delivers one of the strongest long-term value propositions in the smart ring market.
Side-by-Side Comparison: Key Specs for the UK Smart Ring Market
To make the decision clearer for the UK consumer, here is a direct comparison of the fundamental features that define each smart ring experience.
| Feature | Oura Ring Gen 4 | Evie Ring |
|---|---|---|
| UK Availability | Officially available in the UK | UK launch still TBC |
| Starting Hardware Price | £349 (Silver/Black) | ~$269 US (Est. ~£200 UK) |
| Premium Finishes | Up to £499 (Gold, Rose Gold) | Gold, Silver, Rose Gold |
| Subscription Required? | Yes | No |
| Monthly Subscription Cost | £5.99 per month | £0 |
| Annual Subscription Cost | ~£72 per year | £0 |
| Full Feature Access Without Subscription | ❌ No | ✅ Yes |
| Battery Life | Up to 8 days | 4+ days |
| Charging Method | Wired charging dock | Portable charging case |
| Water Resistance | Up to 100m (swim-safe) | Splash & shower resistant |
| Primary Target User | Data-driven health & fitness users | Women-focused wellness users |
| Long-Term Cost Impact | High due to recurring fees | Low with fixed ownership cost |
True 3-Year Total Cost of Ownership (UK Estimate)
This is where the financial difference becomes impossible to ignore.
Oura Ring Gen 4 – 3-Year Cost Breakdown
- Hardware (Base Model): £349
- Subscription: £5.99 × 12 × 3 years = ~£216
- Total 3-Year Cost: ~£565
- If you choose premium finishes: Total can exceed £700
Evie Ring – 3-Year Cost Breakdown
- Hardware (One-Time Payment): ~£200 (estimated UK price)
- Subscription: £0
- Total 3-Year Cost: ~£200
What This Means for UK Buyers
- Over three years, Oura costs nearly 3× more than Evie once subscription fees are added.
- Evie offers true ownership with no long-term financial lock-in.
- Oura delivers deeper performance analytics, but at a significantly higher lifetime price.
- For subscription-averse buyers, Evie is financially unbeatable.
- For elite data enthusiasts, Oura’s premium pricing reflects its advanced physiological scoring system.
The Women’s Health Deep Dive: Oura Ring Gen 4 vs Evie ring comparison UK Features
The increasing sophistication of smart rings is best demonstrated in their ability to cater to the cyclical nature of female physiology, a key priority for many UK buyers. While both rings offer menstrual tracking, their philosophies differ greatly.
Evie Ring’s ‘Designed for Women First’ Philosophy
The Evie Ring was built from the ground up with the female body in mind, a concept that goes beyond simply adding a period tracker. Evie’s most talked-about design feature is its open-band construction, which allows the ring to subtly adjust to the natural micro-fluctuations in finger size that occur throughout the day, and specifically during the menstrual cycle, due to hormonal shifts and fluid retention (bloating).
This focus on comfort during cyclical changes is unique and a huge selling point for users prioritising all-day wearability. In the app, Evie uses a custom AI engine to analyze logged symptoms (mood, energy, pain) alongside biometric data to find correlations, aiming to provide deeper insights into how the cycle affects *all* aspects of health. It offers cycle, period, and ovulation predictions based on this comprehensive dataset.
For a deeper performance and comfort analysis, you can also read our full Movano Evie Ring smart health ring review.
Oura Ring Gen 4’s Advanced Physiological Tracking
Oura’s approach leverages its long-established reputation for accuracy and deep physiological tracking. The Gen 4 has bolstered its women’s health offering with a dedicated Fertile Window feature as part of its updated Cycle Insights. By tracking skin temperature variation, one of Oura’s core, high-accuracy metrics—the ring can detect the subtle basal body temperature changes associated with ovulation, providing scientifically grounded predictions.
While Oura’s design is a traditional, closed band, its strength lies in the depth of data it correlates. The ring’s algorithm feeds temperature data directly into the user’s overall Readiness Score, helping women understand how their cycle phase genuinely impacts their energy and recovery needs, thus preventing overtraining or burnout during certain times of the month.
Battery Life and Charging Convenience: Portable Power vs. Enduring Stamina
A wearable’s utility is zero when its battery is dead, making battery life a crucial consideration. Both smart rings approach power management with different priorities.
Oura Ring Gen 4: The Long-Distance Runner
Oura has consistently focused on maximum uptime. The Gen 4 boasts a battery life of up to 8 days, a marginal improvement over the Gen 3’s 7-day runtime. This impressive duration means you can go an entire week without needing to charge, greatly reducing the friction of continuous wear, which is essential for accurate, uninterrupted data collection. When it does need a boost, the Gen 4 uses a redesigned charger that connects via a simple dock. Oura’s stamina is designed for the user who wants to put the ring on and forget about it for as long as possible.
Evie Ring: The Convenient Sprinter with a Mobile Power-Up
The Evie Ring has a shorter quoted battery life of around 4+ days, but it compensates for this with a truly innovative approach to charging: a portable charging case. Similar in concept to wireless earbud cases, this compact case can hold over 10 full recharges for the ring. This is a significant advantage for travelers, those who are away from home for extended periods, or anyone who simply wants to keep their charging routine flexible. Instead of being tethered to a wall socket for a few hours, you can toss the ring into its case while you shower or do the dishes and get a full charge without plugging anything in.
Data Depth, Accuracy, and App Experience: Holistic Scores vs. Targeted Insights
The quality of the insights you receive in the companion app is what truly defines the value of a smart ring.
Oura Ring’s Comprehensive Scoring System
Oura’s app experience is centered around three proprietary, high-level scores: Readiness, Sleep, and Activity. The Readiness Score, in particular, is a comprehensive daily summary that combines multiple overnight vitals (HRV, Resting Heart Rate, Body Temperature) to give a single, actionable number on how prepared your body is for the day’s stress. The data is vast and detailed, offering in-depth analysis of sleep stages, heart health, and activity levels.
Oura also integrates with over 40 third-party apps, including Strava and Natural Cycles, making it a central hub for serious athletes and advanced health enthusiasts. The accuracy of Oura’s sleep tracking is widely regarded as industry-leading, often compared to medical-grade sleep analysis. You may also explore emerging AI-powered sleep recovery devices that enhance rest, circadian rhythm control, and overnight recovery.
If heart rhythm monitoring is a priority for you, we also compared fitness trackers that can detect AFIB
in a dedicated medical-grade wearable guide.
Evie Ring’s Women-Focused Context
While Evie tracks the core metrics—heart rate, sleep, SpO2, and activity—its strength lies not in generating abstract scores, but in the context it provides for women’s health. The Evie app uses its unique AI to link mood and symptom logs directly to your physiological data. Evie’s predictive health modeling also places it among the most promising AI-powered health gadgets of 2025 .
However, some initial reports suggested the Evie Ring might offer less granular, in-depth workout metrics compared to Oura, focusing more on general wellness, recovery, and cyclical health rather than elite-level athletic performance.
Oura, conversely, offers superior features for athletes, including robust Automatic Activity Detection (AAD) for activities like cycling and running, and deep, two-way integration with major fitness platforms like Strava, allowing users to merge detailed recovery scores directly with their workout logs.
UK Availability and the Waiting Game: When Can I Buy?
For the UK buyer, availability is a straightforward but critical factor distinguishing the two rings.
The Oura Ring Gen 4: Ready and Available Now
The Oura Ring Gen 4 has an established retail presence and clear supply chain in the UK. The ring was officially announced and launched for the UK market in late 2024, with various colours and sizes available directly from Oura’s website and select retailers. If you want a top-tier smart ring right now with guaranteed pricing and clear warranty support within the UK, Oura is the only definitive option.
The Evie Ring: Highly Anticipated, But Still TBC
The Evie Ring, manufactured by Movano Health, has successfully launched in the US market, establishing itself as a credible competitor with a clear, subscription-free price point of $269 and a full suite of features.
However, as of the current market status, the official UK launch date and definitive UK pricing are TBC (To Be Confirmed). While the US pricing suggests a highly competitive estimated UK price of approximately £200, the Evie Ring is not yet fully retail-available to the general UK public. This means that interested UK buyers must wait until Movano Health formally announces its distribution plans and secures local support channels for the UK market. Until then, any potential purchase would likely involve importing the device, which could complicate warranty and customer service.
Design, Durability, and All-Day Wearability
A smart ring’s ultimate test is its ability to be worn 24/7 without being a hindrance.
The Oura Ring Gen 4 continues with its sleek, minimalist aesthetic, crafted from lightweight and durable titanium. The sensors are recessed to maximise comfort, a minor but crucial improvement over the Gen 3. The ring is a fully closed band, offering a classic, premium jewellery look and is water-resistant up to 100 meters, making it safe for all water activities. The Gen 4 is also available in an expanded range of sizes (4-15) and six finishes, including the new Rose Gold.
The Evie Ring features an aesthetic that is often praised for its jewellery-like appearance, available in three finishes: Gold, Silver, and Rose Gold. Its defining characteristic is the small, open gap in the band, designed to accommodate finger-swelling variations experienced during the menstrual cycle or due to daily factors. This design innovation prioritises adaptive comfort. It is built with a scratch-resistant Liquidmetal® alloy and titanium PVD coating. However, its water resistance is limited to 1 meter, making it fine for showering but not recommended for full swimming sessions, which is a drawback for active UK users.
Frequently Asked Questions (FAQs)
1. Which ring is better for budget-conscious UK buyers concerned about ongoing costs?
The Evie Ring is the superior choice for budget-conscious UK buyers because of its core business model: a one-time purchase with no subscription fees. While the Oura Ring Gen 4 has a higher initial cost of $\pounds349$ or more, the requirement of a $\pounds5.99$ monthly Oura Membership to access full data means the total cost of ownership quickly escalates over time. The Evie Ring, estimated to be around $\pounds200$, eliminates this recurring cost, offering significant long-term savings for consumers who prioritise value and dislike mandatory subscriptions.
2. Does the Evie Ring accurately track women’s health and menstrual cycles better than the Oura Ring Gen 4?
The Evie Ring is explicitly marketed and designed with women’s health as its primary focus, featuring an open design to accommodate cyclical finger swelling and an AI engine that connects logged symptoms (like mood and energy) with biometrics for context-specific insights. The Oura Ring Gen 4, while being an excellent tracker overall, uses high-accuracy skin temperature data for its Cycle Insights and new Fertile Window prediction feature. Therefore, Evie offers a more bespoke, female-centric user experience and design, whereas Oura offers deep, validated physiological data which is then applied to cycle tracking.
3. The Oura Ring Gen 4’s monthly subscription truly necessary, or can I use it without one?
While you *can* technically use the Oura Ring Gen 4 without the monthly $\pounds5.99$ membership, the experience is severely limited and does not represent the ring’s full capabilities. Non-subscribers will only receive basic data like the three foundational scores (Readiness, Sleep, and Activity), missing out on the detailed analysis, personalised recommendations, in-depth Sleep Stages, and advanced features like the new Cycle Insights and VO2 Max estimation. The subscription is therefore essential if you want the robust, actionable health data that Oura is famous for.
4. How does the Evie Ring’s battery and charging approach compare for daily life and travel?
The Evie Ring provides about four days of battery life per charge, which is shorter than Oura’s up to eight days. However, Evie compensates with a clever portable charging case that holds over ten full ring charges, similar to a wireless earbud case. This design is excellent for travel, as it allows for multiple recharges on the go without carrying a separate power bank or cable, offering flexible charging opportunities during brief moments of downtime throughout the day.
5. Which ring is currently easiest for a UK buyer to purchase with guaranteed local support and warranty?
The Oura Ring Gen 4 is the easiest and most reliable option for UK buyers right now, as it is officially launched and available for direct purchase in the United Kingdom. This guarantees clear UK pricing, local customer support channels, and a valid UK-based warranty from an established company. The Evie Ring’s official UK launch is still TBC, meaning any purchase would currently likely be an import, potentially complicating warranty claims, customer service, and ensuring definitive UK-specific pricing.
6. Are there any major differences in fitness or activity tracking between the two devices?
Yes, there are subtle differences in the activity-tracking focus. Oura Ring Gen 4 integrates features like Cardio Capacity (VO2 Max estimation) and Heart Rate Zone data for workouts, catering to more serious fitness enthusiasts who want detailed physiological performance metrics. While Evie Ring tracks steps, active minutes, and calories burned, its primary focus is less on athletic performance and more on general daily activity and how movement ties into the user’s menstrual cycle and recovery.
Oura Ring Gen 4 vs. Evie Ring: Which One Should You Choose in the UK?
Choosing between the Oura Ring Gen 4 and the Evie Ring ultimately comes down to what you value most in your health tracking experience: uncompromising data depth and performance insights, or long-term affordability paired with a women-first design philosophy.
The Oura Ring Gen 4 stands as the benchmark for advanced, research-driven health tracking. For users whose budget comfortably accommodates the £349+ starting price and the ongoing £5.99 monthly membership, Oura delivers a premium experience that few wearables can match. With up to eight days of battery life, industry-leading sleep and readiness analysis, full swim-proof water resistance, and deep integration with third-party fitness and wellness platforms, it is built for users who take recovery, performance, and physiological optimisation seriously.
The addition of its Fertile Window and enhanced Cycle Insights further strengthens its position as a holistic health tool. Crucially for UK buyers, it is also the only smart ring in this comparison with confirmed local availability, support, and warranty at present.
By contrast, the Evie Ring emerges as the most compelling choice for women who prioritise hormonal health, comfort, and financial simplicity. With an estimated £200 one-time cost and zero subscription fees, it offers exceptional long-term value. Its open-band, adaptive design directly addresses finger swelling linked to hormonal cycles, while its AI-driven symptom and mood correlation provides relatable, context-rich insights rather than abstract performance scores.
For those who are new to smart rings, uncomfortable with recurring subscriptions, or primarily focused on understanding health through the lens of the female body, Evie presents a refreshing, purpose-built alternative. Once it officially launches in the UK, it is poised to become one of the most disruptive and accessible smart rings on the market.
In simple terms:
Choose Evie Ring if you value subscription-free ownership, women-specific design, and long-term affordability above everything else.
Choose Oura Ring Gen 4 if you want the most advanced, performance-focused health data available today, and you are willing to pay for it.
References
- The Independent. (2024). Oura Ring 4 review: The gold standard in smart rings.
https://www.independent.co.uk/extras/indybest/gadgets-tech/oura-ring-4-review-b2630063.html - TechRadar. (2024). Oura Ring 4 review: Best smart ring gets comfort and battery upgrades.
https://www.techradar.com/health-fitness/oura-ring-4-review - Evie Ring by Movano Health. (2024). Official product page.
https://eviering.com - TechRadar. (2024). Evie smart ring review: In the year of smart rings this women-first tracker falls short.
https://www.techradar.com/health-fitness/evie-smart-ring-review-in-the-year-of-smart-rings-this-woman-first-health-tracker-falls-short
