The Fitbit Air dropped this week and it's one of the more interesting moves Google's made in the wearable space in years. At $99, it's a screenless health band designed to go head-to-head with the Whoop - and unlike Whoop, there's no monthly subscription you have to keep paying to make it useful.
I dug into reviews from four of the most technically rigorous wearable reviewers to see what the Fitbit Air actually delivers - and where it might fall short.
What Is the Fitbit Air?
The Fitbit Air is a small pod that snaps into a band. There's no screen, no GPS, no smartwatch features. Just sensors that track your body 24/7 and sync to your phone.
Google calls the pod itself the "Pebble" - a nostalgic nod to the original Pebble smartwatch that started the whole minimalist wearable idea. The pod weighs just 5.2g; with a band it's around 12g. According to Ray Maker at DCRainmaker, it's "essentially taking the Fitbit Charge 6, removing the screen, and just leaving the internal pod."
Three band styles are available at launch: Active, Elevated, and Performance. Each comes in multiple colors. There's also a co-branded Steph Curry edition at $129.
It's available May 26th, priced at $99 standard, $129 for the Curry edition.
Design: Small, Light, Comfortable for Sleep
The size advantage over a smartwatch is immediately obvious. Rob ter Horst of the Quantified Scientist put it well: "A screenless tracker can be smaller, lighter, and less distracting than a smartwatch. And you can even wear a normal watch beside it."
Des Yap (DesFit) pointed out the practical upside for sleep tracking: "When I sleep on my side, I can certainly feel a watch more than a band." The Fitbit Air is comfortable enough to wear to bed consistently - which is kind of the point when your main use case is recovery and sleep monitoring.
There's no bicep band at launch, which Rob noted as a limitation for some users. But as Dave Dillon (Chase The Summit) observed, "I think within like maybe four to five weeks, we'll see a whole plethora of bands on Amazon." The pod uses a standard Fitbit-style attachment, so third-party band support should come fast.
The device is water resistant to 50 meters.
Sensors and Tracking: Everything You'd Expect
The Air tracks 24/7 heart rate, HRV, breathing rate, SPO2, skin temperature, and steps. It also does FDA-cleared background AFib detection - notable for a $99 device.
Automatic workout detection is included. The Air will recognize running, cycling, rowing, elliptical, sports, and other high-heart-rate activities in the background. As Ray Maker noted, it's not as robust as Whoop's classification system - Whoop can distinguish between mountain bike rides, road bike rides, and indoor cycling. The Air is more generic.
The mitigation: Google's software learns over time. If you keep labeling your Saturday morning activity as "mountain bike," it will eventually learn to classify it correctly without prompting.
For strength training, there's no automatic rep counting. But you can tell Google Health Coach what you did post-workout and it adds the context. If you want GPS tracks for outdoor runs, you'll need your phone - the Air uses connected GPS, not built-in.
Battery: 7 Days, With a Catch
Google claims seven days of battery life, with 90 minutes to full charge. The quick-charge feature is genuinely useful: five minutes on the charger gets you a full day of tracking. That's ideal if you want to charge it while you shower and never miss a night's sleep data.
As Rob ter Horst noted, the competition (Amazfit Helio Band, Whoop) can hit 10-14 days per charge. Seven days is solid but not class-leading. Google's conservative with battery estimates though - Ray Maker noted Fitbit "tends to be very conservative" with battery claims, so real-world results may be at least as good.
The Real Story: Google Health App
Here's where things get interesting. The Fitbit app is being fully rebranded to Google Health - and that's not just a name change. Google is consolidating Fitbit, Google Fit, and Google Health into a single app experience.
The Google Health app (rolling out May 19th) has four tabs:
- Today - your current day snapshot: sleep, readiness, activity
- Fitness - training load, cardio load, V02 max estimates, workout suggestions
- Sleep - sleep stages, trends, nap detection
- Health - individual wellness metrics
On top of that, Google is finally launching Google Health Coach - a Gemini-powered AI coach that can answer questions, build training plans, analyze sleep, and even process photos of food. This is the premium tier ($9.99/month or $99/year after a 3-month free trial with purchase), and all four reviewers found it surprisingly capable.
Des Yap put it bluntly: "This could be Whoop's worst nightmare." Ray Maker called the AI coach "way beyond what anyone else is doing" but noted it can be "a bit over the top" with the amount of text and insights it generates.
Rob ter Horst offered a more cautious take: "AI generated health advice should be treated somewhat carefully. We're still very much in the early stages of AI." Fair.
One More Thing: It Works With Pixel Watch
Google's positioning the Air and Pixel Watch as complementary, not competing. You can wear the Pixel Watch during the day (it has GPS, a screen, smart features), then switch to the Fitbit Air at night for sleep. All data merges in the Google Health app.
If you wear both simultaneously, the Pixel Watch takes priority for heart rate data. But you can set custom priorities per data type - use Pixel Watch data for workouts, Fitbit Air data for sleep.
Third-party device integration is also coming. During the briefing, Dave Dillon noted Google showed the app pulling sleep data from an Eight Sleep mattress cover. Rob ter Horst also pointed out that Google Health can sync with Apple Health - meaning iPhone users with an Apple Watch could route that data into Google Health too.
How It Stacks Up Against Whoop
This is the $99 question (literally). Here's the comparison:
| Fitbit Air | Whoop 4.0 | |
|---|---|---|
| Price | $99 | $348 (hardware) + $30/mo |
| Battery | ~7 days | ~5 days |
| Subscription required? | No | Yes ($360/year) |
| AFib detection | Yes (FDA cleared) | No |
| Automatic workout detection | Yes (limited types) | Yes (extensive) |
| GPS | Connected (phone) | None |
| AI Health Coach | Yes (premium tier) | No |
| Platform | Android + iOS | Android + iOS |
Whoop's subscription model is its real revenue driver. Over two years, a Whoop costs $1,068+ total. The Fitbit Air, even with two years of premium subscription, comes to under $400.
The tracking capability gap is real though. Whoop's activity classification is more sophisticated, and Whoop's app and recovery/strain algorithm have years of refinement. Rob ter Horst put it well: Whoop is "more tailored towards athletes... people who see themselves as doing a lot of sports and wanting to track their recovery." The Fitbit Air with Google Health might appeal more to general fitness users who want a broader health picture.
Sleep Tracking: Where Fitbit Has Legs
Sleep tracking is where Fitbit has historically performed well against competitors. Google claims the new sleep algorithm is 15% more accurate than the previous generation - specifically for sleep stages, interruptions, and nap detection. This improvement applies to all recent Fitbit and Pixel Watch devices via app update, not just the Air.
Rob ter Horst's take was measured: "Based on previous Fitbit performance, I would expect the Fitbit Air is going to be reasonably good for sleep tracking. In my own testing, Fitbit devices have generally performed quite well compared to many other consumer wearables, especially when it comes to sleep."
He's right to be cautious though. Wrist-based wearables don't measure brain waves - they infer sleep stages from movement, heart rate, HRV, and breathing. For tracking trends over time, it'll be useful. For clinical-grade accuracy, look elsewhere.
Nap detection is a standout feature. The Air will detect naps as short as 20 minutes and log them automatically.
What's Not Great
A few things to be aware of before buying:
No built-in GPS. If you want route tracking for trail runs or bike rides, you need your phone. This is standard for screenless bands, but it's a limitation if you like leaving your phone behind.
Workout heart rate accuracy TBD. The Air is tiny. Optical heart rate sensors tend to struggle more during high-movement activities like running or weightlifting. Rob ter Horst explicitly called this out: "I'm curious to see how it performs during runs, cycling, and strength training. These are usually more difficult for optical heart rate sensors."
Automatic activity recognition is basic. It'll tag your run, but don't expect it to know whether you're on a mountain bike or road bike. Whoop is years ahead here.
Bicep band missing at launch. If you prefer wearing trackers on your bicep (common for weightlifting), you'll need to wait or go third-party.
Who Should Buy the Fitbit Air?
Get it if:
- You want Whoop-level tracking without the subscription
- You already live in the Google/Fitbit ecosystem
- You want a comfortable sleep tracker that doesn't feel like a smartwatch
- You already own a Pixel Watch and want better sleep data without re-wearing the watch
Skip it if:
- You need built-in GPS for runs without your phone
- You want the most sophisticated automatic activity classification
- You're an athlete who needs the most accurate workout heart rate data
- You're not in the Google ecosystem and don't want to be
The Bottom Line
The Fitbit Air is a credible first entry into the screenless wearable category by Google. At $99 with no mandatory subscription, it's fairly priced against the Amazfit Helio Band and Polar Loop - and dramatically cheaper than Whoop over time.
The real value isn't just the hardware. It's the Google Health app and the data consolidation play. Google is using the Air as a door opener to get users into a broader health ecosystem that includes AI coaching, medical record integration, and cross-device data merging.
Whether that's compelling depends on how much you trust Google with your health data - and how well the Air actually performs in real-world use. The sleep tracking will probably be good. The workout heart rate accuracy remains the big question mark.
We'll know more once units are in hand. But if Google executes, this could be the beginning of the end for mandatory wearable subscriptions.