Oura Ring 4 review: comfortable, better data collection, and gorgeous, clean app, but requires a paid subscription to use basic features and colors cost more
It remains the smart ring to beat, but is still limited by its form. — Smart rings have been a niche inside a niche in the wearables world for more than a decade.
Context & Ripple Effects
Oura positioned Ring 4 around a slimmer design, more sizes and improved accuracy in its Ring 4 launch announcement. Early coverage also emphasized a redesigned app and better battery life, while flagging the subscription requirement in its first Ring 4 review.
This review reinforces the central trade-off: Oura’s hardware and software polish can make the ring more appealing, but access to basic features remains tied to an ongoing payment and some finishes carry a premium.
First-order effects
- Prospective buyers must evaluate Ring 4’s comfort, data collection and app against both the device price and the recurring subscription needed for basic functionality.
- Oura gains a clearer premium-product proposition, but its color pricing and subscription requirement raise the effective cost of ownership.
Second-order effects
- Other smart-ring makers are pressured to compete not only on sensing and comfort, but on whether core insights are included with the hardware price.
- For Oura, app quality and improved data collection become the visible justification for recurring revenue; weak perceived value in either makes the subscription a sharper purchase barrier.
Third-order effects
- If smart rings remain constrained by their small form factor, differentiation is likely to shift further toward software interpretation, design options and service bundles rather than hardware alone.
- The category’s durable test will be whether subscription-funded features are seen as continuing value or as functionality buyers believe should come with the device, an instance of the subscription scale trap.
The trend: Smart rings are evolving from niche sensors into premium health-service products, with recurring software access increasingly shaping the buying decision.