Updated 2026-05-04 · Auditor: Tomás Maria Vaz de Noronha · Methodology: 3-pass forensic
| Circular Ring Slim | SHR K3 Smart Ring (Ainode) | |
|---|---|---|
| Price | €229 | €129 |
| Subscription | optional premium tier | None |
| Manufacturer HQ | Paris, France (EU-based) | China (audited) |
| Independent privacy audit | Not in any public audit corpus | Tier C (audited) score 51/100 |
| Auditor's finding | — | Health data shared with US servers — documented and disclosed to the user. |
| Public PCAP report | Not published | /audits/shr-k3 |
| Methodology disclosure | Vendor privacy policy only | Full 3-pass methodology + 6-dimension scoring |
| Where to buy | https://circularring.com | /shop/shr-k3-smart-ring |
Health data shared with US servers — documented and disclosed to the user.
Tier: C (score 51/100). Date audited: 2026-04-29. Auditor: Tomás Maria Vaz de Noronha. License: CC-BY-4.0. Methodology: 3-pass forensic network audit (DNS analysis + traffic surveillance + 6-dimension classification).
Full audit page → · All public PCAP reports →
The Circular Ring Slim is not in Ainode's audit corpus. We don't make privacy claims about devices we haven't physically tested. We cite the vendor's stated practices and (where available) third-party reviews like Mozilla Privacy Not Included.
If you'd like Ainode to audit a specific device for your own use case, contact andre.mendonca@ainode.info.
Ainode sells the SHR K3 Smart Ring (€129). This page contains affiliate-style internal links to our shop. We do not sell the Circular Ring Slim and have no commercial interest in its sales — we link to the manufacturer for completeness only.