World’s First ECG Smart Ring Gives You a Free Personal AI Coach Without Monthly Fees like Google or Oura

Smart rings are having a moment, and for good reason. Wearables used to be all about the wrist—bulky smartwatches that buzzed with notifications and demanded daily charging. But health tracking is evolving, shifting to something smaller, subtler, and more intelligent. Companies like Oura, Samsung, Ultrahuman, and RingConn have all entered the smart ring space, but Circular Ring 2 is doing things differently by measuring your data, but not bogging you down with metrics. With a medical-grade EDC (the first on a smart ring), and a free personalized AI coach, the Circular Ring 2 gathers medical and fitness data and uses it to guide you with AI-powered insights, relying on a human-like advice-based approach instead of throwing large numbers and charts at you the way most fitness trackers and wearables do… all with zero subscription fees.

Your doctor doesn’t tell you your blood pressure level and ask you to figure stuff out, right? Instead, they use that data to come up with a diagnosis. The diagnosis then leads to a doctor’s prescription, which is meaningful advice tailor-made to your condition, based on your data. The Circular Ring 2 brings the same approach to health wearables – relying on an AI coach that pushes you on the right track.

Designer: Circular

Click Here to Buy Now: $239 $550 ($311 off). Hurry, only 6/2455 left! Raised over $1.2 million.

Unlike a smartwatch, which relies on data from the wrist, a smart ring gathers information from the finger, where blood flow is stronger and signals are clearer. This allows the Circular Ring 2 to deliver precise, medical-grade readings on heart rate, HRV, sleep quality, SpO₂, temperature, stress levels—without any of the bulk or distractions of a screen. With 140+ biometrics tracked, it does more than just collect numbers. It connects the dots.

The Circular Ring 2 dives deep into your body’s signals, monitoring over 13 key health metrics with medical-grade precision. It tracks heart rate, heart rate variability (HRV), sleep quality, blood oxygen (SpO₂), skin temperature, respiratory rate, and stress levels—all from the most accurate location possible: your finger. The ring also includes women’s health tracking, energy level assessments, recovery analysis, and movement tracking, ensuring that every aspect of your wellness is covered. The ring continuously measures biometrics every 2 minutes, delivering 5 times the data points of standard fitness trackers. Whether it’s detecting early signs of illness, optimizing athletic recovery, or improving sleep, the Circular Ring 2 works behind the scenes to help you understand your body in real-time.

Powering this experience is Kira, an AI-driven health coach that doesn’t just spit out stats but actually interprets them. Rather than flooding you with raw data, Kira provides actionable insights tailored to your unique patterns. If your stress levels spike, it won’t just throw a metric at you—you’ll instead get suggestions for breathing exercises or routine adjustments. Sleep feeling off? Kira will identify patterns and help you fix them. The real value isn’t just in knowing what’s happening in your body but in understanding why and what to do next.

No subscriptions, No hidden fees

The best part is that the AI assistant works without any add-on cost. Unlike Google’s Pixel Watch, which requires an additional subscription to Fitbit Premium for the AI health features, or Oura and Whoop, which require a monthly fee just to unlock meaningful health insights, the Circular Ring 2 doesn’t follow a freemium model. In fact, it takes the opposite approach: one purchase, lifetime access. Every feature, from stress analysis to AI-driven recommendations, is included without any ongoing cost. That’s a bold move in an industry that loves putting its best features behind a paywall.

The app is your go-to destination for all your metrics and insights. Circular even developed meaningful health widgets that can live permanently on your home screen (so you get quick access to data rather than needing to open the app), with seamless integration to Apple HealthKit & Google Health Connect. Your data is anonymized and handled with strict privacy protocols that are compliant with GDPR and EU regulations, which means no third party gets any access to your health data. You’re the only person with access to your health data, and you can even share the data with a partner within the app. People with elderly parents can monitor their vitals remotely (and securely), getting real-time readings for peace of mind.

For a fitness ring, the Circular 2 has an industry-matching battery capacity of a week. That’s a far higher number than most smartwatches (my Apple Watch Series 10 needs charging every single day even with the always-on display off), but it’s fairly standard for smart rings. After all, there’s no screen to drain the battery – which is what honestly makes it MUCH more appealing than watches. The included charging case extends that even further, meaning you can go almost a month without needing to plug it into a wall.

The rings come in US sizes from 5 to 13, but rather than shipping you a plastic sizing kit before sending you the ring, Circular’s developed a brilliant digital sizing tool that lets you measure from your phone in seconds. No waiting, no extra packaging, just a fast and precise way to ensure a perfect fit. The ring itself is crafted from lightweight titanium, in a sleek premium design available in Obsidian Black, Gold, Silver, and Rose Gold, and is fully waterproof. Whether you’re working out, swimming, or just going about your day, it feels effortless to wear.

If you’re considering a smart ring, the pricing is compelling, and the timing couldn’t be more perfect. Backers on Kickstarter can grab the Circular Ring 2 at a Super Early Bird price of $239, a significant discount from its future retail price. Compared to the Oura Gen 3, which costs more upfront and requires a monthly subscription, this ring is a serious contender for those looking to track their health without recurring fees. Smart rings are slowly but surely becoming the next frontier in health tech, with their accurate sensing tech and their substantially long battery lives. The Circular Ring 2 adds a layer of AI-driven insights on top, making them perfect for anyone looking to be nudged in the right direction rather than be bogged down by overwhelming numbers and graphs. If smart rings are the future, this might be one of the best glimpses of what’s coming next.

Click Here to Buy Now: $239 $550 ($311 off). Hurry, only 6/2455 left! Raised over $1.2 million.

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