Oura vs Fitbit: one brand charges for your own data, the other doesn't

The verdict

Which Fitbit we mean

“Fitbit” means something different in 2026 than it did two years ago. Google has folded the brand into its own health stack: on May 7, 2026 the Fitbit app became the Google Health app, Fitbit Premium was renamed Google Health Premium, and Google launched a new tracker alongside both. The older wristbands and watches, Charge 6, Inspire 3, Versa 4 and Sense 2, are still sold and still supported.

This page uses the Google Fitbit Air as Fitbit's contender for the same reason we used the Index Sleep Monitor in Oura vs Garmin: it is the product aimed at the same buyer as a ring. Google calls it “our smallest tracker yet,” a screenless pebble in a band, sold for a fraction of what any ring on this site costs, and built to be worn around the clock rather than glanced at. Its specs are published line by line, which is the only way a product gets scored here.

How each one charges you

Oura sells the ring first, then the plan. You buy the Oura Ring 5 outright. The Oura Membership then costs $5.99 a month or $69.99 a year in the US, with one month included, and Oura says there is currently no lifetime option (Oura Support). The plan is what unlocks the detail behind Oura's three scores, the temperature trends, the Cardiovascular Age and everything Oura adds later.

Google sells the hardware and charges for the coach. Google Health Premium runs $9.99 a month on the Google Store, and Google's own launch post says “Premium plans start at $9.99 per month or $99 per year.” Three months come with the tracker. What the plan buys is the Gemini-built Health Coach and photo workout logging, plus deeper commentary on the numbers. What it does not gate is the numbers themselves.

That difference is the entire argument of this site in one matchup, and it is worth being precise about, because “Fitbit has a subscription” is repeated everywhere and is misleading as shorthand. Fitbit has a subscription; Fitbit does not require one to show you what its sensors recorded. Oura does. For the same test applied to every ring we cover, start with do smart rings require a subscription.

What each brand's free tier really shows

This is the section to read twice, because both brands use the word “free” and mean very different things by it.

Oura, without the membership: your three daily scores (Readiness, Activity and Sleep), ring battery, basic profile information, app settings and the Explore content. That is Oura's own list. The ring keeps recording; you just stop being shown most of what it recorded. Our breakdown of the Oura membership goes line by line.

Fitbit Air, without Premium: Google's help page for getting started says the tracker “automatically tracks various health metrics” including steps, distance, cardio load, calories burned and sleep stages, plus heart rate and an estimate of blood oxygen saturation overnight. The Sleep Score help page confirms the score itself is free and is built from six inputs: sleep duration, time to sound sleep, sound sleep, restlessness, full awakenings and interruptions. Google's upsell line is about what comes after the data: “To review additional insights into your sleep data, including opportunities to chat with the sleep coach about your data, purchase a Google Health Premium subscription.”

So one brand paywalls the measurement and the other paywalls the interpretation. If you are the kind of buyer who reads their own HRV trend and draws their own conclusions, the second arrangement costs you nothing.

The three-year math

Fees only, on the cheapest billing option each brand offers, ignoring any included free month and any sales tax. Hardware is the column we never print, because prices move daily; the buy links go to the live price instead.

Three years in, the Oura owner has paid $209.97 in membership on top of the ring and owns nothing extra for it. The Fitbit Air owner and the RingConn owner have paid nothing and still see their sleep stages. Five years in the gap is $349.95. That is not a rounding error on a device in this price class; on a long enough horizon the fee costs more than the hardware did.

Side by side

Every figure below is the maker's published number, linked to the page it came from. A dash means the figure is not in our cited sources.

What the evidence says

Here the ranking flips, and it flips clearly. The relevant study is Robbins et al. (Sensors, 2024), which put an Oura Ring Gen 3, a Fitbit Sense 2 and an Apple Watch Series 8 against in-lab polysomnography in 35 adults aged 20 to 50 over a single night.

Two honest caveats before anyone treats that as settled. The Fitbit in the study was a Sense 2, a wrist device two generations and one owner ago; no published study has tested the Fitbit Air, and we will not pretend a sibling's result transfers. And a single night per participant is a thin basis for a staging claim about any device. Our guide to sleep tracking accuracy works through every study in our library, including the ones that are less flattering to rings.

The Google Account question

There is a cost to the Fitbit route that does not appear in the fee column. The Google Store specification page lists “Google Account required and Google Health App” under compatibility, and the Google Health app is explicitly built to pull together data from wearables, Health Connect, Apple Health and your medical records in one place. If you are the kind of buyer who left a subscription because you wanted your own data on your own terms, an account requirement from an advertising company is a fair thing to weigh against $0 a month.

It is not a reason to dismiss the device, and Oura requires an account too. It is a reason to read the policy before you buy, which is what our guide to smart ring data privacy is for.

The no-fee ring: RingConn Gen 2

If you came here because you want a ring and you don't want Oura's bill, the Fitbit Air solves the bill but puts the device back on your wrist, which is the thing most ring buyers were trying to escape. The RingConn Gen 2 solves both. RingConn says “No Subscriptions,” claims 10-12 days per charge and up to 150 days with the included charging case, supports iOS 17 and Android 10 or newer, and comes in sizes 6-14 with a complimentary sizing kit. It is our top pick in the best smart rings without a subscription.

Its evidence is thin in the same way the Fitbit Air's is: one seated, not-yet-peer-reviewed preprint against a Polar H10, and a reviewer who found it read heart rate high on runs. If it is down to Oura and RingConn, read Oura vs RingConn or the RingConn Gen 2 review.

Who should buy which

• You won't pay a monthly fee, and a wrist band is fine: Google Fitbit Air. Your stages, score, heart rate, HRV and SpO2 for nothing per month, on iPhone or Android. Accept that no study has tested this model and that a Google Account is mandatory.
• You won't pay, and you want a ring: RingConn Gen 2, or any ring with $0 in the fee column of our smart ring comparison chart.
• You won't pay, and you want nothing on your hand or wrist at night: the Garmin band in Oura vs Garmin sits on your upper arm instead.
• You'll pay for the best-validated option: Oura Ring 5, with $209.97 budgeted for three years of membership. Our Oura Ring 5 review has the rest.
• You want to know whether any of them is accurate for you: buy a chest strap and test it yourself. It is the only way to get an answer about your own wrist or finger.

More head-to-heads live in the compare hub.