Review

CircularChecked by Vetteroo review

Sleep trackers.

We check it out so you don’t have to.

Disclosure: Some links on this page are affiliate links. If you buy through them, we may earn a commission at no extra cost to you. We only recommend things we believe are useful. Read our full disclosure.

What it is
Circular Ring 2 smart ring with health tracking
Best for
Tech fans who want a smart ring
Price
Ring from $349, checked October 30, 2026
Prices checked
October 30, 2026

We researched Circular's official pricing, terms, product pages, help pages and outside reviews. We haven't used Circular ourselves, so this is a research-based review, not a hands-on test.

Who it’s best for

  • Sleep trackers.
  • Fitness trackers.
  • Gadget fans.

Who should skip it

  • Probably not the best fit if you want a proven ring with lots of reviews.

How it works day to day

This part draws on Circular’s own product pages, help center and documentation, read October 30, 2026 (listed under Sources). We haven’t used Circular ourselves.

Order the sizing kit, wear the ring daily, and check the app each morning.

Key features in use

  • Ring
  • App
  • ECG
  • Sleep
  • Charger case

Setup and learning curve

None.

Integrations

None.

Support

Email.

Real-world use cases

  • Sleep
  • Fitness
  • Heart rate
  • Wellness

What it costs

Prices checked October 30, 2026, from Circular’s own pricing page unless noted. Prices change often, so check the official page before you buy.

  • Sizing kit $5; Circular+ guarantee $20; charger case $39; Circular Ring 2 $349-$554 (checked October 30, 2026).
  • 14 calendar days to return for any reason (French consumer law).

What we like

  • Sizing kit first.
  • ECG feature claimed.
  • Charger case.
  • No-fuss 14-day returns.

What to watch for

  • Trustpilot showed 2.4 out of 5 as of October 30, 2026, a weak score we disclose; read recent reviews before you buy.
  • Only 14 days.
  • French company; support may be slower.
  • Pricey.

The fine print

  • Order the $5 sizing kit first.
  • Health readings are not a diagnosis.

The main alternative: Carex Health Brands Checked by Vetteroo

Carex sells home health products like light-therapy lamps.

What it costs: Day-Light Classic Plus $169.99; Elite $189.99, checked October 29, 2026

Read our full Carex Health Brands review

Pick CircularChecked by Vetteroo if you…

  • want a smart ring.
  • want sleep data.
  • want ECG.

Pick Carex Health BrandsChecked by Vetteroo if you…

  • want light therapy.
  • want simple devices.
  • want lower prices.

Our take

Circular makes an ambitious smart ring, but its weak reviews call for caution.

Side by side

CompanyBest forStarting priceTrial / refund
Circular Checked by VetterooTech fans who want a smart ringRing from $349, checked October 30, 202614-day returns
Carex Health Brands Checked by VetterooPeople who want a large, proven 10,000-lux light therapy lampDay-Light Classic Plus $169.99; Elite $189.99, checked October 29, 202660-day returns per the written return policy (a product page said 90); 5-year warranty

From our company records. Check the official pages for current prices.

What we checked

  • Circular's pricing, product pages and terms, read October 30, 2026
  • Circular's Trustpilot profile, read October 30, 2026
  • Carex Health Brands's details: from our published review and its official pages, October 30, 2026
  • The other official and outside pages listed under Sources (links checked October 30, 2026)

Sources

Visit Circular’s official site

How we review

We read the company's own terms, test the sign-up or booking steps where we can, and compare it with alternatives. A commission never changes what we write. Read our disclosure.

Disclosure: Some links on this page are affiliate links. If you buy through them, we may earn a commission at no extra cost to you. We only recommend things we believe are useful. Read our full disclosure.