Garmin Cirqa vs Fitbit Air: Which Screenless Band Is Better?

Buy the Fitbit Air unless you already live in Garmin's world. It does the core job of a screenless band (sleep, heart rate, HRV, blood oxygen and daily activity) for £84.99, it's lighter, and none of that tracking needs a subscription. The Garmin Cirqa costs £179 and earns the extra £94 only if you want Garmin Connect, a longer 10 day battery and sleep coaching you don't have to pay for each month.

Both are screenless, phone-first trackers. Neither has GPS. So this comes down to price, apps and the way each company splits free features from paid ones, rather than any big hardware gap. We've covered the Air against its obvious rival in Fitbit Air vs WHOOP, and the Garmin Cirqa vs WHOOP guide does the same for Garmin's band.

The quick comparison

	Garmin Cirqa	Fitbit Air
UK price	£179	£84.99
Subscription	None needed; Garmin Connect+ optional	None needed; Google Health Premium optional (3 months included)
Paid layer adds	Garmin Coach plans, live activities, nutrition, AI insights	Gemini AI Health Coach
Battery	Up to 10 days	Up to 7 days (5 minute charge gives about a day)
Sensors	Optical heart rate, Pulse Ox, skin temperature, accelerometer	Optical heart rate, SpO2, skin temperature, accelerometer, gyroscope
Headline scores	Body Battery, stress, sleep score, HRV status	Daily Readiness, Cardio Load, sleep stages, HRV
Screen / GPS	None / uses phone	None / uses phone
Water resistance	5 ATM	50 m
Weight with band	About 21g (listed)	12g
App	Garmin Connect	Google Health

Price and subscriptions

The upfront gap is simple: £179 for the Cirqa on Amazon UK against £84.99 for the Air. That's more than double.

The subscription picture is closer than the marketing suggests. Both bands work fully without paying, and both have an optional paid tier. Where they differ is what sits behind the paywall. Google puts its AI coach, the part that reads your data and tells you what to do with it, behind Google Health Premium after a 3 month trial. Garmin keeps its sleep score and personalised sleep coaching free in Garmin Connect, and reserves Garmin Connect+ for training plans, live activities, nutrition logging and its Active Intelligence AI insights.

So if what you want is "tell me how I slept and what I should do about it", Garmin gives more of that for nothing. If you pay for Google Health Premium at the reported £7.99 a month from month four, the Air costs about £157 in year one, which is still less than the Cirqa. It overtakes the Cirqa in year two at roughly £253. Skip Premium and the Air stays at £84.99 forever.

Check the Fitbit Air price on Amazon UK£84.99

Battery life and charging

Garmin quotes up to 10 days for the Cirqa, and that drops if you turn on overnight Pulse Ox, which is normal for Garmin. Google quotes up to 7 days for the Air. Neither figure is something we've tested.

Three extra days sounds like a lot, but the Air's fast charging narrows it. Five minutes on the charger gives about a day of use, so a top-up while you shower keeps it going. The Cirqa's advantage is that you think about charging less often, and for a band whose whole point is being forgotten about, that counts for something.

Sensors and what they measure

The hardware lists are close. Both read heart rate optically, track blood oxygen and skin temperature, and count steps with an accelerometer. The Air adds a gyroscope and Google's irregular rhythm notifications, which watch for signs of atrial fibrillation in the background. Garmin's Amazon listing doesn't mention an equivalent for the Cirqa.

The bigger difference is in what each company does with the data. Garmin turns it into Body Battery, an energy score that rises with rest and falls with stress and activity, plus HRV status, a stress score, women's health tracking and a sleep alignment feature that compares your sleep with your circadian rhythm. If you've used a Garmin watch, it'll feel familiar. Google leans on Daily Readiness and Cardio Load, borrowed from the Pixel Watch, along with sleep stages and Smart Wake, which buzzes you awake in a lighter sleep phase.

Accuracy is where I'd be cautious with both. A 2024 systematic review in JMIR mHealth and uHealth compared older Fitbit and Garmin trackers (the Charge 4 and Vivosmart 4) with lab sleep studies. Both showed moderate accuracy overall. The Fitbit was closer on total sleep time, overestimating it by about 6 minutes on average, while the Garmin overestimated it by about 47 minutes and was weak on REM and deep sleep. The review covered only eight small studies, and neither band in this guide was tested, so don't read it as a verdict on the new hardware. It does suggest you should trust the weekly trends more than any single night's stage split.

Garmin Connect vs Google Health

This might decide it for you. Garmin Connect is dense, data-heavy and built around training. It logs 80+ activity types, auto-detects workouts and learns from your edits, and it ties in with Garmin watches and bike computers if you own any. If you already have a Forerunner or a Venu, the Cirqa slots straight into the same account.

The Google Health app (the renamed Fitbit app) is cleaner and friendlier, and it needs a Google account. It's the better app if you want a quick morning check rather than a spreadsheet of numbers. Both apps work on Android and iPhone.

Wear and comfort

The Air's pebble weighs 5.2g, or 12g with the band, which is about as light as these things get. The Cirqa's module is heavier, with spec listings putting the whole band at about 21g. Both use soft fabric bands meant for 24/7 wear, and both are water resistant enough for showers and pool swimming. The Cirqa comes in S/M and L/XL sizes, so check your wrist before ordering (the Amazon listing linked here is the L/XL).

Neither has a screen. You get vibration and a status light, so if you want the time or your heart rate on your wrist, look at a watch instead. Our Fitbit vs Apple Watch guide is a good start if you're tempted by one.

Check the Garmin Cirqa price on Amazon UK£179

Who should buy which

Buy the Fitbit Air if you want the cheapest sensible screenless tracker, you mainly care about sleep and resting heart rate, and you'd rather keep £94 in your pocket. It's also the pick if you already use the Fitbit or Google Health app, or you want background irregular rhythm alerts. Our Fitbit Air review covers the hardware in more detail.

Buy the Garmin Cirqa if you already own a Garmin watch or bike computer, you want Body Battery and sleep coaching without a monthly fee, or the longer battery matters to you. It also suits people who like digging through training data more than reading a single morning score. The full Garmin Cirqa review goes through its features one by one.

Neither is the right tool for lifting or interval training where your wrist flexes, because wrist heart rate lags on both. Pair either with a chest strap if your zones matter.

Recommended reads

• Garmin Cirqa review
• Fitbit Air review
• Garmin Cirqa vs WHOOP
• Fitbit Air vs WHOOP
• Fitbit vs Apple Watch