7 of the best Smart Rings (UK – 2025)
Looking for cutting-edge health tracking without the bulk of a smartwatch? Enter the smart ring – sleek, subtle, and surprisingly powerful. These futuristic wearables pack advanced sensors into a compact design, offering 24/7 insights into your sleep, stress, heart rate, fitness and more – all from your finger. Whether you’re a biohacker, a wellness enthusiast, or just want smarter data with a minimalist aesthetic, we’ve rounded up the 7 best smart rings of 2025 to help you find the perfect fit.
7 of the best Smart Rings #1 – ULTRAHUMAN Ring AIR
The Ultrahuman Ring AIR is a strong contender in the smart ring world, blending sleek design with a rich feature set aimed at those serious about health and recovery. From advanced sleep tracking to a unique “Stress Rhythm Score,” it offers nuanced insights that go beyond surface-level metrics. Its standout women’s health features, including ovulation and pregnancy tracking, also make it one of the most inclusive rings available. The no-subscription model is a welcome change in a space increasingly locked behind paywalls, offering full functionality through a beautifully designed, intuitive app.
Crafted from space-grade titanium, the Ring AIR is as light and durable as it is stylish. Customers praise its comfort and form factor, with many preferring its thinner design over bulkier competitors like the Oura. The app experience is where Ultrahuman really shines – consistently updated, packed with smart recommendations, and peppered with clever touches like a personalised caffeine window. It’s clear the platform is growing fast and listening to its user base, which bodes well for future improvements.
That said, it’s not flawless. Sizing can be hit-or-miss, and there are a few niggles with connectivity and tracking accuracy – particularly when you’re stationary for long periods. Battery life is decent at 3–4 days, but that can vary based on usage. Still, for a smart ring that delivers in-depth health insights without the need for a subscription, the Ultrahuman Ring AIR is an excellent option for those who want actionable wellness data without the bulk of a watch or the hassle of constant charges. A rising star in the smart ring space.
You can buy ULTRAHUMAN Ring AIR from Amazon here.
7 of the best Smart Rings #2 – RingConn Gen 2
The RingConn Gen 2 smart ring brings serious tech credentials to the wearable health space, with a standout focus on sleep apnea monitoring – something very few rings offer. Built in collaboration with universities and hospitals, its AI-powered sleep tracking adds real clinical weight to its features. But it’s not just about sleep – this ring tracks heart rate, HRV, blood oxygen, stress, and activity in real-time, with no subscription required. Combined with a slick, easy-to-use app and long battery life, it’s a compelling choice for those who want deep health insights without a monthly fee.
Where RingConn Gen 2 really shines is in its battery and charging setup. With up to 12 days of battery life (and a charging case that can extend use up to 150 days), it comfortably outlasts most rivals. Customers consistently praise the accuracy of sleep and health data, the responsive stress tracking, and the comfortable lightweight design – now even slimmer and more discreet than the original version. It also supports over-the-air updates, which means the platform is constantly improving without needing to upgrade your hardware.
However, the sizing process is a bit of a sticking point. RingConn uses its own sizing system, which means a separate sizing kit is a must before ordering – and even then, results can be hit-or-miss. Some users also mention the ring feels a little bulky, particularly if you’re used to slimmer models. And while the sleep apnea feature is a big selling point, the required medical-style disclosures and data sharing may not be for everyone. Still, if you’re looking for a smart ring with no ongoing costs, clinical-grade sleep tracking, and excellent battery performance, RingConn Gen 2 is a top-tier contender.
You can buy RingConn Gen 2 from Amazon here.
7 of the best Smart Rings #3 – OURA Ring 4
The OURA Ring 4 continues to lead the way in smart ring health tracking, offering a sleek, discreet alternative to bulkier wearables like fitness watches. Its Smart Sensing technology adapts to your individual physiology, delivering impressive accuracy across metrics like heart rate, body temperature, HRV, sleep quality, and activity levels. With up to 8 days of battery life, a smooth wireless charging system, and a titanium build available in stylish finishes, the Oura Ring balances form and function effortlessly. The companion app is intuitive, and for women, the inclusion of menstrual and fertility tracking adds extra value.
Users consistently highlight how comfortable the ring is for all-day wear, particularly for those who dislike wearing watches. The Readiness Score is a standout feature, combining sleep, activity, and recovery data into a daily wellness indicator that many find both accurate and motivating. Real-time health feedback, sleep pattern detection, and early illness prediction have impressed users — especially those who want a deeper connection to their body’s signals. The sizing kit also receives praise for helping users get a snug, personalised fit.
That said, the subscription model remains a point of contention. While basic data is available without a plan, access to the full suite of insights and features requires a monthly or annual fee, which some buyers feel should be included at the ring’s premium price point. A few also note the ring is slightly chunky, especially on smaller fingers, and that standard ring sizes don’t always translate perfectly. Still, for those serious about sleep and recovery tracking — and looking for a stylish, low-maintenance wearable — the OURA Ring 4 is one of the best options on the market.
You can buy OURA Ring 4 from Amazon here.
7 of the best Smart Rings #4 – Synqlux Smart Titanium Ring
The Synqlux Smart Titanium Ring is a feature-rich smart ring that offers a surprising amount of functionality at a competitive price point. Built with a sleek titanium design and water resistance up to 50 metres, it’s suitable for everyday wear and active lifestyles. It monitors key health metrics like heart rate, HRV, SpO₂, temperature, sleep stages, and stress, and even includes non-invasive blood glucose monitoring through its proprietary BGEM™ technology – something rarely seen in wearables at this price level.
For fitness and recovery, the ring supports VO₂ Max estimation, activity tracking, and detailed sleep analysis, while also offering women’s health tracking features like cycle and pregnancy-related reminders. Unlike many rivals, Synqlux doesn’t require a monthly subscription – all features are unlocked from day one. Battery life is solid, with most users reporting between 6 and 10 days per charge, and it syncs with both Android and iOS via its own dedicated app.
That said, the app experience seems to be a bit hit-and-miss. While the data collection appears reliable and the hardware performs well, several users note that the app could use more polish, especially compared to more established brands. Still, for those looking for a smart ring that delivers broad health insights – including glucose trends and VO₂ Max – without tying you into ongoing subscription fees, the Synqlux Ring offers impressive value in a growing field of wearables.
You can buy Synqlux Smart Titanium Ring from Amazon here.
7 of the best Smart Rings #5 – femometer Smart Ring Gen2
The Femometer Smart Ring Gen2 is a beautifully designed, women-only health tracker that combines form and function in an ultra-lightweight, ceramic ring. At just 2.7mm thick and weighing only 3.3g, it’s built for 24/7 wear and offers water resistance up to 100 metres. It covers all the expected metrics – heart rate, HRV, SpO₂, steps, and sleep – but its standout feature is advanced cycle tracking, using BBT (basal body temperature) technology to deliver precise ovulation and fertility insights. It’s part of the wider Femometer ecosystem trusted by over 15 million women globally.
Battery life is a real strength, with a charging case that stores five full charges, giving users up to 35 days of usage without needing to plug in. The app is free to use, and setup is relatively smooth, although proximity is needed for pairing. Sleep tracking is impressive, offering full-stage breakdowns, blood oxygen monitoring, and a smart alarm feature. And the ring itself? Comfortable, elegant, and durable – much like wearing a minimalist wedding band.
That said, this is very much a health ring designed first and foremost for women tracking their cycle and fertility. While it also offers fitness and wellness data, the Femometer app is heavily weighted toward reproductive health, which may not suit everyone. There’s also mention of premium features hidden behind optional in-app purchases, which slightly undermines the “no subscription” claim. Still, for women actively seeking accurate cycle tracking in a discreet and stylish format, the Femometer Gen2 stands out as a compelling option.
You can buy femometer Smart Ring Gen2 from Amazon here.
7 of the best Smart Rings #6 – Samsung Galaxy Ring
The Samsung Galaxy Ring marks a sleek new entry into the growing smart ring market, delivering a premium, discreet wearable that pairs seamlessly with the Samsung Health ecosystem. Designed for all-day, all-night wear, it offers a 7-day battery life, 10 ATM water resistance, and a lightweight, minimalist design that fits comfortably into daily life. Core features include sleep tracking, HR monitoring, activity tracking, and cycle prediction, with detailed metrics presented in the Samsung Health app.
One of the standout features is the Energy Score, a simplified yet smart output that combines data from your sleep, heart rate, and activity to give you an at-a-glance view of your current condition. The AI-powered insights feel like a logical next step for Samsung, taking the ring beyond raw data and into useful, contextual coaching. Sleep tracking is a particular strength, with Sleep Coaching tools aiming to nudge users toward healthier sleep routines over time.
While it’s a great fit for Samsung users, compatibility is currently limited to Samsung Galaxy devices, which is something to be aware of if you’re using a different Android or iOS device. There’s also no screen or haptics – which some might miss – but if you’re after a smart ring that just quietly does its job well and integrates with an already strong health platform, the Galaxy Ring is a polished and impressive offering.
You can buy Samsung Galaxy Ring from Amazon here.
7 of the best Smart Rings #7 – Amazfit Helio Smart Ring Health Tracker
The Amazfit Helio Smart Ring delivers a sleek, sensor-packed alternative to traditional smartwatches—ideal for those who want health tracking without wristwear. Made from 316L stainless steel, it’s built to last and offers a stylish, jewellery-like finish that blends well with other accessories. The ring tracks sleep, heart rate, blood oxygen, temperature, and more, with all data presented clearly in the Zepp App, which gets strong marks for layout, sync reliability, and ease of use.
Accuracy is a highlight here. Heart rate readings are reported to be consistently in line with smartwatches, with users impressed by the data parity and reliability during everyday wear. The ring is especially well-suited to casual users who want all-day comfort and passive tracking, and its lightweight feel makes it easy to forget you’re even wearing it. The inclusion of lifetime access to Zepp Aura Premium—without needing a subscription—is a welcome bonus compared to many rivals.
That said, the experience is let down slightly by limited sizing options, with no current sizing kit available—something several buyers found frustrating. Battery life also falls short of advertised claims, with many users getting only 2 days per charge, which may be a dealbreaker for some. But for the price, it’s a compelling choice—especially for sleep tracking—offering a solid alternative to a smartwatch with no ongoing costs.
You can buy Amazfit Helio Smart Ring Health Tracker from Amazon here.
Whether you’re focused on fitness, sleep, stress management or just want to ditch the smartwatch for something sleeker, today’s smart rings offer a compelling alternative. From premium picks like the Oura Ring Gen3 and Samsung Galaxy Ring, to more affordable options like the Amazfit Helio or Ultrahuman Ring Air, there’s a smart ring to suit every lifestyle and budget. While each has its strengths—be it app experience, health insights, or battery life—they all prove that big things really do come in small packages.
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