An honest health-tracker comparison
Ray or Oura Ring 4?
A smart ring and a light-powered wristband solve all-day tracking in different places. Compare comfort, charging, software cost and the health signals each one prioritizes.
The short answer
Choose Oura Ring 4 if you prefer a ring and Oura's polished sleep and readiness experience. Choose Ray if your priority is a quiet, screen-free tracker that avoids both a charging ritual and a required subscription.
The long view
Five-year cost.
A simple comparison using today's US list prices. It is not a forecast of promotions, future price changes or replacement cycles.
$349 starting hardware price plus five years at the current $69.99 annual membership rate; taxes, finishes and promotions excluded.
Common questions
FAQ.
Short answers to the practical differences people ask about before choosing.
Does Oura Ring 4 require a subscription?
Full Oura app access after the included trial requires membership, currently $5.99 monthly or $69.99 annually in the US.
Does Ray require a subscription?
No. Ray's core app and tracking do not require a recurring plan.
Which is lighter, Ray or Oura Ring 4?
Oura Ring 4 is lighter at 3.3 to 5.2 grams depending on size; Ray weighs 7 grams and is worn on the wrist.
Does Ray include every Oura sensor?
No. Oura includes blood-oxygen sensing; Ray does not. The products also use different form factors and software models.
The useful differences
Side by side.
Specs are manufacturer claims and US pricing snapshots, not lab-test results. A blank promise is less useful than a clear tradeoff, so we keep this list deliberately practical.
| What changes | Chargerless Ray | Oura Ring 4 |
|---|---|---|
| Format | Screen-free wristband | Smart ring |
| Power | Light powered; no charging routine | Rechargeable; 5–8 days |
| Screen | None | None |
| Weight | 7 g | 3.3–5.2 g, depending on size |
| US price | $199 silver / $229 gold | From $349 |
| Required subscription | None | $5.99/month or $69.99/year |
| Core tracking | Sleep, heart rate, HRV, temperature, steps and light exposure | Sleep, readiness, activity, HR, HRV, temperature and SpO₂ |
Choose by priority
Neither wins every category.
The best tracker is the one whose compromises fit your life—and that you will actually keep wearing.
Ray's case
No cable. No screen. No subscription.
Ray has no dock, no required membership and leaves your fingers free.
Oura Ring 4's case
Pick it for what Ray leaves out.
Oura is smaller and has a mature app, established sleep research and SpO₂.
Research note. Competitor facts were checked against Oura Ring 4 store and membership support on August 20, 2026. Prices, promotions, regional features and announced-product timelines can change. Ray details reflect the current Chargerless product page. Neither product is a substitute for medical care.
Wear your health. Not a charger.
Ray tracks the essentials in a 7-gram bracelet powered by light. Silver starts at $199. Gold starts at $229. No required subscription.
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