Circular review
Updated September 30, 2026 · ThriveCue Editorial Team · Facts checked September 30, 2026
We earn a commission when you sign up through links on this site. Partner status can affect where a brand appears in our rankings.
Our verdict
Circular suits anyone who wants a smart ring without a recurring subscription, and it holds the top spot on membership cost with a monthly fee of $0. The catch is endurance: 8 days of battery sits below what rivals manage.
Key facts
- Best for
- Anyone buying a smart ring who refuses a recurring membership fee.
- Price from
- $349 (Source, checked September 30, 2026)
- Membership per month
- $0 (Source, checked September 30, 2026)
- Battery life
- 8 days (Source, checked September 30, 2026)
- Platforms
- iOS, Android (Source, checked September 30, 2026)
- Water resistance (m)
- 50 (Source, checked September 30, 2026)
- Warranty
- 1 year (Source, checked September 30, 2026)
- Markets
- LV, JP, IN, TH, CN, ID, VN, HK, SG, TW, KR, PH, MY, BD, KH, AL, DE, AD, AM, AT, BY, BE, BA, BG, CY, VA, HR, DK, ES, EE, FI, GE, GI, GR, GL, GG, HU, IM, AX, FO, IE, IS, IT, JE, XK, LI, LT, LU, MK, MT, YT, MD, MC, ME, NO, NL, PL, PT, CZ, RE, RO, SM, RS, SK, SI, SE, SJ, TR, UA, FR, IL, FJ, MX, PF, PG, AZ, LA, LB, LK, MN, MO, NP, PK, PS, TJ, UZ, AR, BR, CI, CM, CO, CV, DZ, EC, EG, GA, GF, GH, GM, GN, GW, LY, MA, MG, ML, NE, NG, PE, SN, TN, UY, ZA, BL, MF, MQ, PM, CL, CA, SC, BH, OM, SA, QA, AE, KW, MM, JO, AU, NZ, CH, GB, US (Source, checked September 30, 2026)
- Legal entity
- Circular Health Limited (Source, checked September 30, 2026)
- Headquarters
- France (Source, checked September 30, 2026)
- Support channels
- Email, Chat, Help-centre (Source, checked September 30, 2026)
- Products
- Smart ring
- Health sensors
- Heart rate, Spo2, Ecg, Skin temperature, Hrv, Sleep, Blood pressure
- Official website
- circular.xyz
Apps and profiles
- Get the app
- Google Play
- Elsewhere
Pros and cons
Pros
- No recurring membership charge at $0, which ranks 1 of 21 brands.
- Entry price of $349 is a single hardware cost rather than a package that hides a subscription.
- Water resistance of 50 metres suits swimming, showering and general wear.
- A 1 year warranty is the same as the common smart ring term, so nothing is unusual either way.
Cons
- Battery life of 8 days ranks 16 of 23 brands, so charging is more frequent.
- The entry price of $349 sits at 29 of 31 brands, so the hardware itself is not the cheapest.
- Support runs on email, chat and help centre only, with no phone line listed.
- The warranty is 1 year, which is the shortest term in the smart ring set.
Who it suits
- Buyers who want a ring and no monthly membership, given the fee of $0.
- People who care about durability over battery, with resistance of 50 metres and a 1 year warranty.
- Senders who travel often, since Circular Health Limited ships across LV, JP and IN.
Who should look elsewhere
- Battery-first buyers, who should look at Oura, where the entry price starts at €265.30.
- Shoppers who want a ring plus a watch, since Amazfit and Samsung both list wider product ranges while Circular sells smart ring only.
Pricing
Circular sells the ring as hardware only, with an entry price of $349. There is no joining fee attached to using it: the membership costs $0. That is the clearest thing separating Circular from ring rivals, and readers who price a wearable by what it costs every month will find this the cheapest ongoing commitment in the smart ring set. The purchase price itself is less competitive. At $349 the hardware ranks 29 of 31 brands, so you pay more up front than many alternatives and then pay nothing after. The break-even therefore depends on how long you keep the ring. Someone who wears it for years ends up ahead, while someone who replaces it sooner pays a higher total than a cheaper ring would cost. There is no tiered plan to compare, no trial and no per-feature upgrade, which keeps the arithmetic simple.
Where it sits among rivals
Ranked on the measures readers care about most, Circular splits the field. On membership cost it comes 1 of 21 brands, a clear lead driven by a fee of $0. On price from it sits at 29 of 31 brands, so the ring is priced toward the expensive end of the smart ring category. Battery life is the weak point: 8 days ranks 16 of 23 brands, which puts the ring in the lower half of a category where several rivals last far longer between charges. The pattern is consistent. Circular trades runtime for running cost, and the ranking on each measure shows the same trade from both sides. Oura enters at €265.30, so buyers shopping mainly on hardware cost have a cheaper starting point elsewhere.
What it does well
Battery life is 8 days, which is short enough to shape how you use the ring, since you will be charging it more often than the market average. The hardware offset is water resistance of 50 metres, so swimming and daily wear pose no real problem. That matters most if the ring is the device you never take off. Coverage is backed by a 1 year warranty, matching the common term in the smart ring set rather than beating it, so treat it as the baseline rather than a selling point. Taken together, the ring is built for people who want a durable, water-tolerant band and will accept charging it between wears, and less suitable for anyone who wants the longest possible gap between charges.
Who runs it
The company behind the ring is Circular Health Limited, registered in France. That is a named corporate entity rather than a marketplace seller, so the contract you accept has a specific party behind it. Support runs on email, chat and help centre, which covers written contact and a self-service help centre but lists no phone number. Buyers who prefer to call a support line will want to know that before ordering, since the ring is a wearable that takes some getting used to. Overall, the company picture is straightforward: a single established seller, reachable in writing, with no regulator or licence listed in the terms. Away from support, the ring itself is the whole product, with smart ring as the only type offered.
How Circular compares
8.8 vs 9.0
Circular vs Ultrahuman Amazon8.8 vs 9.1
8.8 vs 9.5
8.8 vs 8.8
8.8 vs 8.9
8.8 vs 8.9
8.8 vs 8.7- 8.8 vs 8.9
8.8 vs 9.2
8.8 vs 9.2
8.8 vs 9.3
8.8 vs 8.9
8.8 vs 9.0
8.8 vs 9.6- 8.8 vs 9.3
8.8 vs 9.2
8.8 vs 9.2- 8.8 vs 9.2
8.8 vs 9.1- 8.8 vs 9.1
8.8 vs 9.1- 8.8 vs 9.1
Samsung covers smartwatch and smart ring, pairing a ring with a watch for shoppers who want both from one maker.
Circular vs METZ8.8 vs 9.0- Circular vs RingConn8.8 vs 9.0
8.8 vs 9.0
8.8 vs 9.0
8.8 vs 8.8
Where Circular is available
- Available
- Aland Islands, Albania, Algeria, Andorra, Argentina, Armenia, Australia, Austria, Azerbaijan, Bahrain, Bangladesh, Belgium, Bosnia and Herzegovina, Brazil, Bulgaria, Cabo Verde, Cambodia, Cameroon, Canada, Chile, China, Colombia, Côte d'Ivoire, Croatia, Cyprus, Czechia, Denmark, Ecuador, Egypt, Estonia, Faroe Islands, Fiji, Finland, France, French Guiana, French Polynesia, Gabon, Gambia, Georgia, Germany, Ghana, Gibraltar, Greece, Greenland, Guernsey, Guinea, Guinea-Bissau, Hong Kong, Hungary, Iceland, India, Indonesia, Ireland, Isle of Man, Israel, Italy, Japan, Jersey, Jordan, Kuwait, Laos, Latvia, Lebanon, Libya, Liechtenstein, Lithuania, Luxembourg, Macao, Madagascar, Malaysia, Mali, Malta, Martinique, Mayotte, Mexico, Moldova, Monaco, Mongolia, Montenegro, Morocco, Myanmar, Nepal, Netherlands, New Zealand, Niger, Nigeria, North Macedonia, Norway, Oman, Pakistan, Palestine, Papua New Guinea, Peru, Philippines, Poland, Portugal, Qatar, Reunion, Romania, Saint Barthélemy, Saint Martin (French Part), Saint Pierre And Miquelon, San Marino, Saudi Arabia, Senegal, Serbia, Seychelles, Singapore, Slovakia, Slovenia, South Africa, South Korea, Spain, Sri Lanka, Svalbard and Jan Mayen, Sweden, Switzerland, Taiwan, Tajikistan, Thailand, Tunisia, Turkey, Ukraine, United Arab Emirates, United Kingdom, United States, Uruguay, Uzbekistan, Vatican City, Vietnam
Countries from the brand (Source, checked September 30, 2026)
Frequently asked questions
How much does the Circular ring cost?+
The entry price is $349, charged for the hardware itself. There is no joining fee to use it, since the membership costs $0. Readers comparing total ownership over several years will find the hardware cost is front loaded rather than spread across a subscription.
Is there a membership fee for Circular?+
No monthly membership is charged, as the membership costs $0. That places Circular 1 of 21 brands on that measure. It is the main reason to pick this ring over rivals that tie the app to a recurring plan.
How long does the battery last?+
Battery life is 8 days between charges, which ranks 16 of 23 brands. That is the main compromise here, so if you dislike charging a wearable often, compare a longer lasting ring before settling.
Can I swim and shower with the ring?+
Water resistance is 50 metres, which covers swimming, showering and ordinary daily wear. It is backed by a 1 year warranty, the same term most smart ring brands offer, so the protection is standard rather than extended.
Where does Circular ship?+
Circular Health Limited, based in France, ships the ring across LV, JP and IN. That list covers Europe, the UK, the US, Canada, Japan, much of Asia, Australia and New Zealand, so most buyers can order without a third party.
How do I get help from Circular?+
Support runs on email, chat and help centre, so you can reach the company by email or chat, or work through the help centre. No phone line is listed, which matters if you prefer talking a problem through while setting up a new wearable.
Does the Circular app work on my phone?+
The ring pairs with iOS and Android, so it works on both major phone platforms without a specific handset requirement. That makes it a safer pick than an accessory tied to one ecosystem, particularly if you switch phones.
What does the Circular ring actually track?+
The sensor set covers heart rate, spo2 and ecg, spanning heart rate, blood oxygen, ECG, skin temperature, HRV, sleep and blood pressure. Circular lists smart ring as its only product type, so the ring is the entire range here rather than part of a wider wearable line.
Sources
- circular.xyz/terms-of-sale checked September 30, 2026
Backs: Headquarters, Legal entity
“the registered office of which is located at 1 Rue Marguerin, 75014, Paris, France”
- shop.circular.xyz/products/circular-ring-2 checked September 30, 2026
Backs: Battery life, Health sensors, Markets, Platforms, Products
“Battery 8 days power mode, 5 days performance”
- circular.xyz checked September 30, 2026
Backs: Price from, Support channels, Warranty, Water resistance (m)
“Circular Ring 2 $349 · No forced subscription.”
- circular.xyz/terms-of-use checked September 30, 2026
Backs: Membership per month
“The Circular ring is sold as a one-off purchase. No subscription is required to use the ring or the Circular app, and the health features included with the ring remain available at no further cost.”
Compiled from 4 source pages, checked September 30, 2026. We did not open an account.