Nice Sleep Tracker
The adaptive fit is great and the ring stays put on my finger. I have to wear it halfway between my knuckles for it to get reliable blood oxygen data, however.
Daytime metrics are unreliable and the app is buggy for workouts. I ended up using the ring only for sleep tracking and use an Apple Watch during the day.
Sleep metrics are excellent, including heart rate HRV, blood oxygen and skin temperature.
The analysis is pretty good, and they provide some nice statistics and graphs of my sleep performance. There is also limited Apple Health data transfer.
I would prefer, however if the Circul app sent all metrics to Apple Health so they can combine that with my Apple Watch data and provide a more comprehensive health overview.
Response from developer
Please make sure you’ve updated both the app and the ring’s firmware — we’ve already resolved the app crash issue in the latest version. If you have any questions, you’re always welcome to contact us via in-app Feedback or by emailing support@circulsense.com . We’re happy to help!
Ring Is Great App needs work
Service exception
So many features do not work
Crashing
Fraud
*****I'm reply to the CIRCUL reply****I've tried everything. Including sleep apnea monitoring with what appears a full battery. Nothing works!!! I've even contacted customer service and gotten no reply!!!!*****
Response from developer
We’re really sorry about your unpleasant experience. Have you tried using the Sleep Apnea and Blood Pressure Forecast features by tapping the Add (+) button on the bottom bar while the ring’s battery level is sufficient? If so, were the measurements recorded correctly? In some cases, these issues may be related to low battery levels. We recommend checking the battery status first. You’re always welcome to reach out to our customer support team in either of these ways: Open the app and go to More → Help → Feedback to send us a message directly. Or simply email us at support@circulsense.com Please don’t worry — our customer support team is here to help. Kindly contact us, and they will guide you through the next steps. We’ll do our best to resolve this issue for you as soon as possible.
Doesn’t work
Decent hardware. Bad software
If you are in a workout it silos all health data and does not write it to Apple Watch. This completely defeats the purpose of using the ring during a workout because you need it to write to Apple health so you can read the data. Further, it auto detects workouts and doesn’t allow you to turn that feature off. Currently, there does not appear to be any way to get heart rate data during a workout from the ring to Apple health. I would change my review under 2 circumstances. 1. All the data to push to Apple health during a workout in the same way it does during sleep and outside activities. 2. Give access to the raw data. If it records every best, show it! Otherwise how are we supposed to take it seriously. Both of these would make the ring much more usable.
This app sucks
First week
The circul sense team is quick on replying to my support questions. Work is actively being done on the app and firmware of the device. Can't wait to see what is coming next.
Response from developer
Thank you for your response. We truly appreciate you taking the time to share your thoughts with us. Your suggestions are very important and valuable to our team. We will continue working on optimizing both our app and our product to improve the overall user experience. Currently, we have released a feature that allows you to customize parts of the home screen. For example, in the Overview module on the Home page, you can tap the “More” button in the top-right corner of the Overview section. This will take you to the Overview page, where you can tap the edit button in the top-right corner to drag and arrange the function blocks, choosing which ones appear on your Home page. In addition, we are currently preparing a more detailed user manual and index description guide. Once completed, it will be published in both the app and on our website. We hope this will help users better understand the features and data provided by the product. If you have any further suggestions or feedback, please feel free to send them through the in-app feedback system or email us directly at support@circulsense.com. We are always happy to hear from you. Thank you again for your support.
Customer service none existent
Response from developer
You’re always welcome to reach out to our customer support team in either of these ways: Open the app and go to More → Help → Feedback to send us a message directly. Or simply email us at support@circulsense.com — we’re happy to help!
CIRCUL Ring 2.0
Response from developer
First, please try updating the ring’s firmware. If the issue continues, you can also reset the ring by going to More → User Profile → Settings → Recover Ring. and you’re always welcome to reach out to our customer support team in either of these ways: Open the app and go to More → Help → Feedback to send us a message directly. Or simply email us at support@circulsense.com — we’re happy to help!
CIRCUL Ring 2.0
Ring stopped connecting after version 2.02 of the app
Clever Ploy
Response from developer
We’re really sorry about your unpleasant experience. Have you tried using the Sleep Apnea and Blood Pressure Forecast features by tapping the Add (+) button on the bottom bar while the ring’s battery level is sufficient? If so, were the measurements recorded correctly? In some cases, these issues may be related to low battery levels. We recommend checking the battery status first. You’re always welcome to reach out to our customer support team in either of these ways: Open the app and go to More → Help → Feedback to send us a message directly. Or simply email us at support@circulsense.com Please don’t worry — our customer support team is here to help. Kindly contact us, and they will guide you through the next steps. We’ll do our best to resolve this issue for you as soon as possible.
Nice ring. Terrible app.
Response from developer
Thank you so much for your suggestion! We truly want to hear about your real experience, and we’ll continue working to improve our product. You’re always welcome to share your detailed feedback with us via in-app Feedback or by emailing support@circulsense.com . Don’t worry — with your input, we’re confident we can make this product even better!
Great sleep tracker but not much else
I’ve found I’m better off not using the work tracker.
Downgrade
Response from developer
The home page now shows only simplified metrics for a quick overview. For professional users who want more detailed data, you can access all metrics in the Insight view. For example, blood oxygen information can be found under Insight → Sleep Apnea Estimate. By tapping on the Sleep Apnea Estimate card, you’ll see detailed blood oxygen readings (including second-by-second values), sleep apnea events, and more. You can also view historical curves right in the card. If you have any questions, you’re always welcome to contact us via in-app Feedback or by emailing support@circulsense.com . We’re happy to help!
