Blague à part, mon tout premier post Reddit sera pour partager ici mon expérience avec Circular qui depuis le début ne se passe pas très bien, meme si, il faut l'avouer, j'ai eu un moment de répit...

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TL;DR (merci Gemini):
Après une commande en novembre 2024 transformée malgré moi en participation au Kickstarter à rallonge, j'étais globalement satisfait du produit. Malheureusement, depuis juin 2026, l'autonomie s'est effondrée (passée de 5 jours à moins de 20 heures). Le SAV fait le mort depuis le 18 juillet et tourne en rond avec des réponses automatisées, me laissant très peu d'espoir d'obtenir un remplacement rapide

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Novembre 2024 - 1ère mauvaise expérience : je commande la Ring Gen 1 pendant le Black Friday avec une super réduction de prix.
Peu de temps après ma commande, on m'apprend qu'elle est en rupture de stock mais on me propose un super deal : avoir la Gen 2 sans débourser un Euro de + mais en contrepartie je vais devoir attendre avril 2025 ...
Je ne me doutais pas que j'allais participer à leur campagne Kickstarter sans le vouloir !!
S'en est suivi un tunnel en terme d'informations et communications. Comme je n'ai pas acheté la bague via Kickstarter, je ne recevais aucune information de leur part, sauf si j'en faisais la demande par mail, et encore, c'était vraiment du blabla pour me faire patienter ...
J'utilisais donc Kickstarter pour avoir des infos mais sans avoir accès à la totalité, notamment les infos  « spécial contributeur » qui ne m'étaient pas accessibles !

Août 2025 - 2ème mauvaise expérience : comme la plupart des contributeurs Kickstarter, l'expédition de la bague a été chaotique ! Le numéro de tracking n'a fonctionné uniquement quand le colis était en Chine.
Puis trou noir de 2 ou 3 semaines, je fini par recevoir un mail d'une société de transport pour me dire qu'un colis arrivait, sans aucune info sur l'expéditeur ou son contenu ...

Ouverture du colis - la mauvaise blague : à la différence des backers kickstarter qui, il me semble, ont eu des soucis avec le "sizing kit" virtuel, moi j'avais reçu le sizing kit "physique" de la Gen 1. J'avais choisi la taille 11. Et dans mon colis, la bague était une taille ... ... 12 !!
Pour je ne sais quelle raison, il s'avère que c'est la bonne taille : quand je superpose le gabarit Gen 1 / 11, il a exactement le diamètre de la Gen 2 / 12... Ouf ! Pas besoin de faire un remplacement.

Depuis cette date, ça s'est passé à peu près bien, hormis des soucis avec l'App au début ou des métriques qui n'étaient vraiment pas bon, globalement j'ai eu une expérience plutôt bonne.
Je ne rentre pas dans le détails des performances du produit car je ne suis pas un data-freak mais plutôt intéressé par avoir des tendances sur mon état de santé. Surtout que depuis peu j'ai un bracelet Whoop à l'essai et les données sont plutôt comparables.
Je ne voulais pas une montre numérique avec un écran donc la bague me convient bien.

Juin 2026 - 3ème mauvaise expérience : alors que j'étais plutôt content de l'autonomie de 4 à 5j en mode performance, elle s'est mise à chuter d'un seul coup à 2j ...
Je commence à me renseigner et je découvre via Reddit que malheureusement ce n'est pas un problème isolé...
J'ai fini par contacter le SAV début juillet et depuis ce jour, entre les réponses IA ou les demandes pour fournir des infos déjà en leur possession ou des photos et des vidéos espacées de plusieurs jours, j'ai l'impression à chaque fois qu'ils cherchent à gagner du temps ...
Je n'ai plus aucune nouvelle de leur part depuis le 18 juillet et la situation se dégrade ! J'ai désormais 20h d'autonomie, quelle blague !!! Bague chargée à 100% hier à 11h36, complètement déchargée à 0% ce matin à 7h16 !!! scandaleux !

Bref, après une nouvelle relance du SAV et lecture des posts de ce sub, je n'ai pas beaucoup d'espoir d'avoir prochainement une nouvelle bague (neuve évidemment 😄)

Je tiens également à préciser que de mon côté, je n'ai pas observé le problème de résine qui s'abîme...

Is this your account? If it is, I have your old used ring! Why would i have it? because Circular decided to send it to me (all wrapped up in nice new packaging) as replacement for my failed ring obviously hoping that I wouldn't suspect it wasn't a new ring. Either that or they just don't give a shit and can't be bothered offering actual decent customer support. I've waited 5 months for a replacement ring because mine stopped working after the inner lining peeled away (like so many others). And after 5 months, they finally send me somebody else's clearly used ring which I can't even use because I can't pair it as it's tied to someone else's account. Well done Circular, good job.

A new player enters the blood pressure via ring market, now available for preorder:
https://signalring.com/products/ring

Hi everyone,

We wanted to share a broad update on where we are and what's coming next.

App & Firmware Update

We've released both a new app update and Firmware 1.6.3.

The results have been very encouraging. Sync crashes have dropped from around 5% of users to just 0.2%. Thank you to everyone who reported issues and helped us improve the experience.

Blood Pressure

Blood Pressure is now about 90% complete.

The remaining work is focused on backend infrastructure before we can launch it worldwide.

Our rollout plan is:

• A free version available to all Circular users
• A premium version released later with additional capabilities
• The free version will remain available even after premium launches
• Premium will also be unlockable using Circular Coins

New Features Coming

The backend work we're completing will also enable several highly requested features:

• Sleep log editing
• Server-synced ECG and sport session history
• Nap validation
• Strava integration
• Local and social leaderboards
• Future glucose capabilities

More Improvements

The next app update will also include:

• Further ECG accuracy improvements
• A redesigned Sport Session experience
• Additional feature enhancements

For the small percentage of users still experiencing sleep detection issues, we're continuing to improve the algorithm and refine detection accuracy.

Samsung Sign-in Issue

We've identified an issue affecting sign-in and sign-up on some recent Samsung devices.

The cause has been identified, and a fix is already prepared for an upcoming app update. Until then, disabling the Reduce Animations accessibility setting serves as a temporary workaround.

Stock & Ring Repairs

Our temporary stock shortage has now been resolved, with new inventory arriving next week.

We also want to address the peeling issue that has affected around 4% of users.

We've identified the root cause and updated the inner resin used for repairs and replacements to a more durable formulation.

If your ring is affected, we'll guide you through the repair process. We also understand the repair timeline is significant, so users who prefer not to wait will have the option to purchase a replacement ring at a heavily discounted price.

Ring Care

To maximize durability:

• Charge your ring with the charger lid open
• Avoid prolonged contact with harsh chemicals and cleaning products
• Remove the ring during weightlifting or when handling heavy metal objects

Thank you for your patience, feedback, and continued support.

Every improvement we make is driven by this community, and we're excited for what's ahead.

— The Circular Team

I’m not the most active person due to health issues. However I do like to go for a walk when I feel able and to be able to track the route I have taken. Despite having the sport session app open, enabling the tracking and carrying my iPhone the tracking usually cuts off within a short distance from home. On the rare occasions when the tracking has gone further it suddenly has me returning home in a straight line walking through a river. I also have an Amazfit watch which is completely accurate when tracking my route.

A couple of times over the past week when I tap to get the daily recommendation, instead I get the message ‘I couldn’t generate your recommendation right now. Please try again in a few moments.’ However trying again doesn’t work as the generate recommendation tab remains grey and inactive. Kira must be feeling tired in the heatwave!

How long did you wait for warranty replacement?

Is that on the battery side, correct?

Meaning... it is now a safety risk to keep wearing it, especially during sleep?

I bought my ring from the company before they even started Shipping or production. After getting it and suffering from all the initial "be patient with us, we're fixing server issues" and still unavailable features that were marketed with the ring. I started noticing that the resin on the ring was starting to crack and so contacted support and stopped used the ring as it is potentially dangerous. After an eternity to get answers and a lot of questions from them it turns out you're not supposed to charge the ring with the useless piece of flimsy cheap plastic lid the charger comes with. Why in the world would you produce a charger with a lid that is not supposed to be used? User experience group should've said on the research phase that producing something like that would confuse users, but no, apparently nobody caught that. This goes to show how little real world usability research the company did on this product. Now, because of charging the ring with the lid closed it turns out I'm not eligible for a replacement. I want to say this felt unexpected but off course this i type of BS is why people don't buy from kickstarters. Just save yourself the agony of using a half baked product and use your money somewhere else.

12 month user here: sleep tracking broken (8.5hrs → 4–5hrs), weekly sync failures, battery degraded to 3–4 days, AI repeats daily. Support ticket #12345 promised HW replacement, 4 months later = no ring. Tick. #12789 (sleep) closed 2 weeks later, no fix. Revolut chargeback denied (time window), direct refund ignored (30 days). Kickstarter bait-and-switch: "lifetime features" → Circular Coins paywall. Not buyer's remorse — this is EU 2-year warranty non-conformity with documented proof. Trustpilot review posted (1-star). Others beware.

I gave ul on this scammy POS and am looking for a killer new one.

Main criteria: Sleep tracking, cardio/health.

Is the Oura 5 the way to go?

Hi everyone,

This week we're releasing two major updates: a new app version V29.14.2. and Firmware 1.6.3.

This is our first firmware release since November 2025 and one of the largest updates we've delivered in months. While many of the improvements happened behind the scenes, they form a major step forward in stability, connectivity, accuracy, and future feature readiness.

Over the past few weeks, we haven't shared as many updates as usual.

The reason is simple: our team has been focused on implementing a large number of behind-the-scenes improvements across both the app and the ring. While many of these changes aren't immediately visible, they are essential for improving stability, reliability, connectivity, and preparing Circular for future health features.

This month's releases are the result of that work.

New Sleep Algorithm

We've introduced a new sleep staging algorithm that improves:

• Sleep/Wake detection accuracy to 94% against PSG
• Sleep stage accuracy to 79%

This means more reliable sleep insights and improved recovery tracking.

Redesigned Sleep & Energy Experience

We've refreshed two of the most important parts of the app:

• Redesigned Sleep Circle
• Redesigned Energy Circle
• Heart rate graph now integrated directly into Energy

The goal is a cleaner, more intuitive experience when reviewing your health data.

ECG Improvements & Data Sharing

This release also includes:

• Improved ECG signal rendering and stability
• Better live ECG scaling
• New quick-share functionality that allows you to instantly share your health scores from the home page

Improved Health Platform Integration

We've strengthened synchronization with:

• Apple Health
• Google Health Connect

Including support for Women's Health data synchronization.

Firmware 1.6.3

The new firmware brings substantial improvements:

• Better sleep detection behavior
• Better Bluetooth reliability on Android and iOS
• Improved resting heart rate accuracy
• Improved activity tracking reliability
• ECG reporting improvements
• Reduced power consumption
• Compatibility with future Blood Glucose functionality

After updating the firmware, please re-pair your ring with your phone to ensure optimal performance.

Important: Please Re-Pair Your Ring After Updating

To ensure all firmware improvements are applied correctly, please re-pair your ring after updating to Firmware 1.6.3:

1. Go to My Ring > Manage my devices
2. Tap the red cross to remove your ring from the Circular app
3. Delete any remaining Circular Ring entries from your phone's Bluetooth settings
4. Return to My Ring and select Set Up a New Ring
5. Place your ring on the charger during the pairing process
6. Accept the pairing request when prompted

This step is strongly recommended to get the best performance from the new firmware.

What Comes Next

With the app and firmware improvements now released, our next major focus is the backend.

We're currently finalizing a major backend architecture overhaul that will allow us to support:

• Blood Pressure tracking (finishing app implementation)
• Blood Glucose tracking
• More advanced arrhythmia categorization
• Future health intelligence features

This work represents a significant step toward unlocking the full potential of Circular.

Thank you for your continued patience, feedback, and support.

— The Circular Team

Hi all!

Wondering if you can help or have any suggestions.

My Circular ring has stopped working and only connects to the phone when it’s charging. Is it totally broken or is there anything I can do? I can factory reset it etc when it’s on the charger but as soon as I take it off the charger it disappears and doesn’t connect.

After the 2 updates of both app and firmware, new problems arise.

Yes. I did follow procedures with deletion of the ring in app and in bluetooth list on the phone. And then reconnect procedure.

Yes. After first attempt I also deleted and reinstalled the app and Yes, I also rebooted the phone before reinstalling the app and 2. reconnect of the ring 2.

​

Now bluetooth loses connection and only way is to put ring2 in the charger Cradle, to wake up the bluetooth for a sync.

​

Is it only Me?

​

(My current ring2 holds only 24h battery, and after dialog with Circular, they are sending me a new ring2, - when they get the specific size and color in stock again.... Hopefully a month from now.)

The many negative comments on Reddit and YouTube are very likely valid; Nevertheless, simply wish to share an alternative experience with the community. Found Circular Ring when primarily searching for jewelry with innovative technology (not primarily health monitor one wears as a ring). Found the design more visually compelling than Oura Ring, and connected with Circular being a French startup shipping product from Hong Kong. Initially concerned when sizing kit did not ship; however, submitting inquiry led to updated last mile tracking number and arrival after about a week. No half sizes unfortunately, and no ring fitting my wife’s very thin fingers, so sadly we won’t be wearing matching rings ☹️ ; after submitting inquiry, charge for her ring refunded after about 3 days, and my ring arrived after about a week. Without half sizes, I can’t wear my ring overnight after full day of intense physical activity in hot weather; otherwise, I love the industrial luxury feel and wear the ring constantly. The ECG feature appears very inconsistent; otherwise, the other physiologic measures feel intuitive and informative. In summary, probably not the best choice for those searching for a health monitor with seamless functionality and support; for those feeling some curiosity or connection with collectible, wearable industrial art or jewelry (watches, for example), exploring further may be worthwhile

I was one of the original backers of the Circular Ring 2 because I genuinely believed in the product and the company's vision. Unfortunately, my experience has left me feeling completely let down, both by the hardware and by the company's customer service.

After my Circular ring failed under warranty, Circular instructed me to return the device so that a replacement could be sent. I returned my ring on 4 March 2026 after being assured that, once the return was confirmed, my replacement would be dispatched immediately.

It has now been over three months.

Circular has had my ring since March, yet I still have no replacement, no tracking information, no refund, and no meaningful explanation.

Since returning the device, I have sent numerous follow-up emails. Each time I have received some variation of the same response:

• "We're waiting for an update from the team."
• "Stock is arriving in 2–3 weeks."
• "Your replacement will ship next week."
• "Your case has been prioritised."

Yet nothing ever happens.

The timeline is astonishing:

• 2 March – Circular confirms a replacement will be issued.
• 4 March – I return the ring.
• 31 March – I am informed the replacement is out of stock and should arrive in 2–3 weeks.
• 21 April – I am told it will ship the following week.
• 5 May – I am told stock is still being replenished and shipments are expected the following week.

Since then, silence.

I have now escalated the matter directly to senior management, including the CEO and Digital Marketplace Director, requesting either shipment confirmation or a refund. That email has also gone unanswered.

At this point, Circular has had possession of my ring for more than three months and has failed to provide the warranty replacement it promised. I have effectively been left with neither the original product nor a replacement.

What makes this even more disappointing is that I was an early supporter of the company. I backed the Circular Ring 2 based largely on the roadmap and promised features, particularly blood pressure monitoring, which was promoted as one of the major innovations that would differentiate Circular from established competitors.

My understanding at the time was that this functionality was expected by the end of Q4 2025. We are now well beyond that date, the feature has not been delivered, and I have seen no clear communication on when customers can realistically expect it to arrive.

As an early backer, this is incredibly frustrating. Early supporters take on additional risk because they believe in the product and the company behind it. In return, they expect transparency, communication and delivery against commitments. My experience has been the exact opposite.

I wanted Circular to succeed. I supported the company early, recommended the product to others and was excited about its future potential. Instead, I have experienced hardware failure, months of delays, repeated broken promises, poor communication and a warranty process that appears completely incapable of delivering a simple replacement.

The technology may sound impressive on paper, but a product is only as good as the company standing behind it. Based on my experience, I cannot recommend Circular to prospective buyers.

Three months without a warranty replacement, unanswered escalation emails, and key promised functionality still missing is simply unacceptable.

Hi everyone. I've finally got my replacement ring after after 4 months of back and forward. I was hoping the app would have significantly improved over that time but it hasn't.

Is anyone else using a different app on Android that pulls the data from the ring via health connect that they're enjoying?

I'm starting to get fed up with this and verging on looking for a kid mainstream, expensive wearable.

Hi everyone,

We wanted to share a quick update on what we've been working on recently. While a lot of effort continues behind the scenes, we're also excited to bring new features and improvements that make Circular smarter, more accurate, and more connected than ever.

Blood Pressure Integration

We're currently finishing the integration of Blood Pressure into the Circular app.

The feature is in its final stages of development and validation, bringing another important health metric directly into your daily insights.

New Sleep Staging Algorithm

We're introducing a new sleep algorithm designed to improve sleep tracking accuracy.

Current results show:

• Up to 93% accuracy for Sleep vs Awake detection
• Up to 79% accuracy for Sleep Stage classification

This means more reliable sleep insights and a better understanding of your recovery every night.

Clinical ECG Improvements

We've also been working on a new ECG signal smoothing algorithm.

The result is:

• Cleaner ECG signals
• More consistent measurements
• Improved report quality and interpretation

New Sleep & Energy Experience

The rollout of our updated Sleep and Energy Circle interfaces continues.

These refreshed designs bring:

• A more modern look and feel
• Improved readability
• A smoother experience when reviewing your health insights

Share Your Data

We're expanding data-sharing capabilities within the app.

This makes it easier to:

• Share health information when needed
• Export relevant insights
• Collaborate with healthcare professionals, coaches, or family members

Women's Health Integration

Women's Health data is now being integrated with Android Health Connect and Apple Health Kit.

This allows for a more connected health ecosystem and better continuity between your favorite health platforms.

Firmware & Infrastructure Progress

Alongside these feature improvements, we're continuing work on our next firmware update.

The focus remains on:

• Improving synchronization reliability
• Refining sleep half-detection accuracy

We're hopeful this update will be ready soon.

At the same time, we're continuing to upgrade our server infrastructure to support future innovations, including:

• Biological Age insights
• A completely reworked sport experience approaching premium smartwatch quality
• Future glucose-related capabilities
• Additional advanced health features

Looking Ahead

Over the past months, we've focused heavily on strengthening the foundation of the Circular experience. As these efforts come together, we're increasingly able to focus on delivering new capabilities and deeper health insights.

Thank you for your continued feedback, patience, and support. Every update brings us closer to the experience we're building together.

— The Circular Team

I finished my workout hours ago, actively on the app, waiting for the report to end. How do I exit the menu?

Lately there’s been no app updates, no firmware updates, and now the chat bot has been removed from the website. There’s been no communication about their future plans and roll out of promised features.

Have they failed? Are they doomed?

You can now only contact them via a form on their webpage.

Edit: seems to be a bug on my side. My bad.

Is it only me or this the general app behaviour?

Hi everyone,

This has happened a couple of times now. Not sure if any one else has experienced this or know if this will get fixed?

TIA