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Fitness bands are making a resurgence, and Google wants in on the party. Recently, I got a chance to review the latest Fitbit Air.

The $100 fitness band takes aim at popular offerings like the Whoop as an inexpensive alternative to premium health trackers (annual subscriptions start at $200, rising to $360). While Whoop caters to a serious athletic audience, the Fitbit Air goes more mainstream, designed for regular users at a more approachable price point (and no subscription required). 

Also: I wore Google's Fitbit Air to track my health for a week, and it's a serious Whoop rival for less money

The devices are similar. They ditch the screen for a band form factor and utilize apps as the center of the health-tracking experience. They both track activity, sleep, recovery, and stress, and, of course, they have complex AI assistants (though Google's AI Health Coach is available only with its premium membership tier). 

So which should you buy? That depends on how much you're willing to spend and what you want. While I haven't tried the Fitbit Air out yet, I've compared the specs of both devices and considered their product offerings to break down the pros and cons. 

At a glance

You should buy the Whoop band if...

1. You want a longer battery life 

Whoop's battery lasts 14 days, whereas the Fitbit Air lasts only seven. The higher-end device will last you twice as long as the Fitbit Air, so you won't have to charge it as frequently. 

2. You want more extensive data on demand 

Google's Fitbit Air offers a similar health-tracking experience to other Google products, such as the Pixel Watch. The app provides insights into your sleep, steps, and readiness. With Google Health Premium, you can use the AI Health Coach to get more data visualization or compare several metrics at the same time, but you'll have to go one extra step and ask it to generate this. 

Also: Your Whoop app isn't just for fitness anymore - you can order blood tests through it now

Whoop, on the other hand, offers extensive data visualizations you don't have to generate or query an AI assistant for (Whoop offers its own AI assistant, and was one of the first health wearable companies to do so). It's a device that tracks daily activity, but with a greater emphasis on how these daily decisions create a life of longevity. Whoop's Healthspan feature is a great example of this: Whoop users can see how their exercise, stress, and sleep have contributed to their physiological Whoop age and their pace of aging, that is, how quickly their behaviors are contributing to their lifespan. It's a pretty bio-hacky feature you won't find in the Fitbit Air. 

The app maps your recovery and strain to show the relationship between your body's recovery from intense exertion. Another chart analyzes your sleep to determine whether you're getting enough or falling short. Whoop's Health Monitor keeps an eye on your key biometrics to detect variations in heart rate, heart rate variability, and body temperature, and alerts you of potential strain or illness. 

3. You want more out of your health tracker

There are other small, premium details packed into Whoop that you may not get from Google's Fitbit Air. For example, Whoop can detect when you've traveled to another time zone, provide jet lag guidance for sleep timing, light exposure, caffeine, and hydration. It's focused more on personal optimization, and its offerings are marketed toward a more affluent, lifestyle-optimized audience. 

Also: I wore the Whoop 5.0 for a month - it combines the best of the Oura Ring and Apple Watch

Unlike the Fitbit Air, which can only be worn around the wrist, Whoop also offers bicep bands and bras to track your health data across your body for more accurate data capture. 

You should buy the Fitbit Air if...

1. You want a budget-friendly tracker

The Fitbit Air is designed for a more mainstream fitness audience -- not so much a premium, longevity- and biohacking-obsessed audience to which Whoop caters. It's also priced accordingly. Without the $100 annual Google Health subscription, the Fitbit Air costs $100. In contrast, annual Whoop subscriptions start at $200, with the highest "medical grade" tier at $360. 

While I enjoyed the elevated experience of interacting with the Google Health Coach, only available through the membership tier, I don't think it's necessary for everyone. You could very easily use this device without its AI Coach. It will still track your sleep, exercise, and key biometrics, alert you of low readiness days and whether or not you're meeting weekly cardio goals. 

Also: iFixit tears down 'the most repairable smartwatch' - and it's not from Apple

Notably, unlike Whoop, Google doesn't force you into an annual subscription fee. You can take or leave Google Health Premium membership and still track the basics, like steps, recovery, sleep, and activity.  

2. You don't want data overload

Those who haven't used a health tracker before may not need as extensive data capture, and all the charts comparing these biometrics could be more stressful than insightful. 

Google's Fitbit Air (and its other devices) is geared toward a more general, exercise enthusiast crowd that is less concerned with learning whether their biometrics put them ahead or behind their actual age (as is the case with Whoop's audience). The Fitbit Air discreetly tracks the basics, like steps, weekly cardio, sleep, recovery, and stress -- leaving the peripheral data at the door. This makes the device a great first health tracker that won't overwhelm. 

Also: I tracked 3,000 steps on my Apple Watch, Google Pixel, and Oura Ring - this one was most accurate

With a Premium membership, you can ask Google's Health Coach to generate more detailed data to visualize your recovery and strain, or your sleep needs, compared to logged time asleep. I enjoyed using the Health Coach to log meals, ask for suggestions on poor-readiness days, and better understand my sleep and energy scores.

I even imported exercise data from other apps, asking the Coach to retroactively log the weight-training exercises into a strength-training session I had logged in Fitbit. But the Fitbit Air emphasizes the basics, and that's more than enough for most people. 

3. You want a lighter device

The Whoop weighs about 26 grams, while the Fitbit Air weighs only 12 grams. This makes the budget-friendly device significantly lighter and a little bit more comfortable to wear throughout the day. I loved wearing the Fitbit Air and found it to be uber comfortable. Plus, its neutral band blended into outfits without calling attention to itself. My only gripe is that it isn't water-wicking, so it would stay wet for a bit after I washed my hands or showered with it. 

Writer's choice

After reviewing both fitness trackers, I really appreciate the Fitbit Air's emphasis on accessibility and accuracy. It's great to see fresh competition in a space that's mostly been dominated by the Whoop. Throughout my time as a wearables expert, I've noticed the growing popularity of screenless health trackers, such as bands and smart rings, but there are still very few viable fitness bands available. 

It's even better that the Fitbit Air comes with an optional Google Health Premium subscription, unlike the Whoop, whose subscription tiers are mandatory and expensive. 

I'd recommend the Fitbit Air as a great first fitness tracker. It's got everything you need to dive further into your health, sleep, and activity, but it intentionally avoids data overload. The Whoop is better suited for fitness-tracking and biohacking veterans who want a longer-lasting device with extensive data insights.