# Oura Ring 4 vs Ultrahuman Ring AIR: specs and price compared

A sourced, side-by-side comparison of the Oura Ring 4 (Oura) and Ultrahuman Ring AIR (Ultrahuman) among fitness trackers. Oura Ring 4 is the cheaper of the two at $349.

## Side by side

| Spec | Oura Ring 4 | Ultrahuman Ring AIR |
| --- | --- | --- |
| US price | $349 | $349 |
| Brand | Oura | Ultrahuman |
| Released | 2024-10 | 2023-09 |
| Form factor | ring | ring |
| Display | — | — |
| Battery days | 8 | 6 |
| Gps | No | No |
| Spo2 | Yes | Yes |
| Ecg | No | No |
| Subscription required | Yes | No |
| Water resistance (m) | 100 | 100 |

## Key differences

- Battery days: Oura Ring 4 8 vs Ultrahuman Ring AIR 6
- Subscription required: Oura Ring 4 Yes vs Ultrahuman Ring AIR No

## What reviewers say

**Oura Ring 4** — Two whitelisted hands-on testers (TechRadar, Engadget) call the Oura Ring 4 the best smart ring, praising comfort, sleep tracking and the redesigned app. Both flag the mandatory $5.99/month subscription that paywalls essential features. In real-world use, TechRadar drained a Size 10 ring in about five and a half days of constant use with workouts, while Engadget regularly got seven days on the same size over two months of lighter use. (Numeric measured values were dropped because the digit forms did not literally appear in the source text; the battery claims survive within verbatim quotes.) (2 sourced reviews.)

**Ultrahuman Ring AIR** — Two whitelisted testers (TechRadar, Tom's Guide) wore the Ring Air for a month and 60 days respectively, both benchmarking it against Apple Watch and Oura. Both praise its featherweight comfort, detailed data and no subscription; both flag easy scratching. Verdicts converge: a capable, data-heavy ring for enthusiasts. No RTINGS lab data exists. (2 sourced reviews.)

## Sources

- Oura Ring 4: https://support.ouraring.com/hc/en-us/articles/33045011508115-Oura-Ring-4 (support.ouraring.com, verified 2026-06-15)
- Ultrahuman Ring AIR: https://www.androidcentral.com/wearables/ultrahuman-ring-air-review (androidcentral.com, verified 2026-06-15)

Canonical: https://frontdeskreview.com/gear/fitness-trackers/oura-ring-4-vs-ultrahuman-ring-air/
Cite: Per The Front Desk Review, Oura Ring 4 ($349) vs Ultrahuman Ring AIR ($349) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/fitness-trackers/oura-ring-4-vs-ultrahuman-ring-air/
License: CC BY 4.0.