
CIRQA’s own full review covers accuracy testing across six sessions, plus sleep, steps and calories. For retailers, see CIRQA Smart Band price and availability.
You’ve seen the spec table comparisons elsewhere; the comparisons here should be more useful for you.
I’ve used all 5 main screenless trackers, some for many years, and this article tells you what each one is best for and analyses them all against the real criteria you use when making a buying decision, like “Does it actually look good?”
What each band is best at
None of these has GPS, and all work on iOS or Android.
- CIRQA Smart Band is superb for existing Garmin owners who want a screen-free device to complement their watch or Edge. Also a great entry point for anyone going into the feature-packed Garmin Connect ecosystem for the first time. Garmin watch owners weighing Garmin vs WHOOP already get sleep, HRV and training readiness from a watch worn overnight; CIRQA collects the same data on the days and nights the watch stays off.
- LOOP is made well and offers a subscription-free way into a good but dated app.
- WHOOP 5.0 is the pick for anyone making a lifestyle statement. It has the best app and sport auto-detection, great at understanding your recovery and coaching you toward fitness goals. Blood test results sit alongside your WHOOP data on every tier: uploading your own results is free, while WHOOP’s own blood testing is a US-only add-on from $199 a year.
- Helio Strap ties as the cheapest option here and has a surprisingly good app. Its Pro option is built specifically for niche uses linked to hybrid training (HYROX).
- Fitbit Air ties Helio Strap as the cheapest option, and is the lightest and easiest device here to swap bands on.
Price and subscription
| CIRQA | LOOP | WHOOP 5.0 | Helio Strap Pro | Fitbit Air |
|---|---|---|---|---|
| $199.99, no subs (Optional Connect+ $69.99/yr) | $199.99, no subs | $199/yr (One), $239/yr (Peak), or $359/yr (Life, includes MG hardware) | $99.99, no subs. Pro is $199.99 | $99.99, no subs (optional Google Health Premium, $99/yr) |
Price Verdict: Amazfit Helio Strap and Fitbit Air are tied as the cheapest at $99.99 with no subscription, so there’s no outright winner on price alone. Many key calls come down to whether you need the niche features in the optional subs (e.g., you need Fitbit’s subs to get the AI features). Whilst there is no choice with Whoop’s subs, there are tiers of subs, and there are compelling health features in the higher price tier for those who can afford it.
Google Fitbit Air
Activity tracker
Aesthetics and bands
These devices need you to want to wear them all day, every day. They have to look and feel good in every situation.
| CIRQA | LOOP | WHOOP 5.0 | Helio Strap Pro | Fitbit Air |
|---|---|---|---|---|
| 4 colourways, official bands only ($49.99 wrist, $59.99 arm); third-party straps already on Amazon. Super fiddly to change straps. LED hard to see if recording. | 6+ colours, $30 each, first-party only so far | SuperKnit bands, largest and longest-standing aftermarket and apparel market of any device here | Wrist, arm and waist options included, first-party only | Widest first-party range at launch from $34.99, third-party straps already available, lightest at 12g. |
Aesthetics Verdict: Fitbit Air is simply too narrow for most people (good for many women perhaps) but looks cheap. WHOOP’s bands generally look fantastic, and they are easier to change than all but the Fitbit. CIRQA feels big on the wrist, but in reality its size is not too different from the Polar and Amazfit.
Garmin CIRQA Smart Band
Screenless health and fitness band (no subscription required)
RRP £179.99
$199.99/€199.99
- use code:
Get it nowOrder now – Garmin CIRQA Smart Band Also sold direct byApp quality
The band gives you no feedback. All your insights come from an app you’ll use every day. Most of the brands’ apps have what most people need… somewhere. But usability is the feature you will use every day.
| CIRQA | LOOP | WHOOP 5.0 | Helio Strap Pro | Fitbit Air |
|---|---|---|---|---|
| Garmin Connect: mature, deep training data, complex app | Polar Flow: does a basic job well, it just doesn’t look great | Strongest app in class. Benchmark app for a coaching, recovery and medical-adjacent experience | Zepp App: impressively solid but less polished than Garmin or WHOOP | Google Health: clean look and simple to use. Coaching needs subs. |
App Verdict: The polish and usability of WHOOP’s app remains the standard the others are judged by, while CIRQA wins by being part of an expansive sports ecosystem. If you want simplicity, go for Fitbit or Polar.

Button and autodetect quality: Sport Detection
The band has to either auto-detect exercises near perfectly or let you manually start and stop them. Without either of those, you won’t get a clean record of your sporting activities.
| CIRQA | LOOP | WHOOP 5.0 | Helio Strap Pro | Fitbit Air |
|---|---|---|---|---|
| Physical button plus good auto-detection. Excellent overall. | Decent auto-detection but no button. | No button, but class-leading auto-detection | No button, decent detection. Advanced detection capabilities in the Pro pods. | No button, good auto-detection |
Sport Logging Verdict: CIRQA plays the trump card for me with its button. Beyond that, WHOOP sets the detection benchmark. The rest are OK.
Amazfit Helio Strap
Sports tracker biceps band
Differentiator
The differentiators answer why each product exists as it does.
| CIRQA | LOOP | WHOOP 5.0 | Helio Strap Pro | Fitbit Air |
|---|---|---|---|---|
| A complementary purchase or gateway product to Connect | A cheap WHOOP wannabe | Excellence and status, for a price | Another cheap Whoop wannabe, but the Pro model gives unique HYROX insights | Google’s way to grab your data for its AI model. Its size and price ensure it can be used by most people. |
“Why It Exists” Verdict: Each device has one clear reason to exist beyond the others, from Helio Strap Pro’s unique HYROX data to Fitbit Air’s mass market appeal.
Polar Loop
Arm-worn heart rate tracker
Battery
| CIRQA | LOOP | WHOOP 5.0 | Helio Strap Pro | Fitbit Air |
|---|---|---|---|---|
| 10 days | 8 days | 14 days | Wrist or arm sensor 7-11 days,
waist pod up to 40+ days |
7 days |
Battery Verdict: They all have good or excellent battery life plus an annoyingly unique charging cable/cradle.
Positioning
| CIRQA | LOOP | WHOOP 5.0 | Helio Strap Pro | Fitbit Air |
|---|---|---|---|---|
| Companion to a Garmin watch or Edge, general fitness and wellness | Companion to a Polar watch, everyday recovery and activity, or Whoop competitor | Expert at recovery and strain optimisation | Companion to an Amazfit Balance 3, Balance Ultra or Active Max, or Whoop competitor | General wellness and light activity tracking, not really intended as a Pixel Watch companion |
Market Positioning Verdict: One key use of CIRQA is as the companion device. But CIRQA, LOOP and Helio are all Whoop competitors to some degree. Fitbit Air is perhaps targeting the budget and female markets more.
Quick answers
Which of these screenless trackers is cheapest overall?
The Amazfit Helio Strap and Fitbit Air both start at $99.99 with no required subscription. Helio Strap Pro, CIRQA and Polar LOOP sit at $199.99 as one-time purchases. WHOOP is the only device bundled into an annual membership, starting at $199 per year.
Does WHOOP require a subscription?
Yes. WHOOP hardware is bundled into membership rather than sold separately. Tiers run from $199 per year (One) up to $359 per year (Life), which is the only route to the WHOOP MG hardware with its ECG and blood pressure trend features.
Do I need an Amazfit watch to use Helio Strap Pro?
Yes, for the full system. The waist motion pod and its HYROX per-station analysis require pairing with a compatible Amazfit watch: Balance 3 and Balance Ultra at launch, and Active Max since its October 2026 update. The arm or wrist heart rate sensor alone works as a standalone tracker without a compatible watch.
Which of these trackers has a physical button?
Garmin CIRQA is the only device in this group with a physical button, letting you manually start an activity, snooze an alarm or broadcast heart rate without opening the app. LOOP, WHOOP, Helio Strap Pro and Fitbit Air are all buttonless and rely on autodetection or the app.
WHOOP vs Fitbit Air: which should I buy?
WHOOP wins on app depth, workout autodetection and battery life at 14 days versus 7, and the MG tier adds an ECG option Fitbit Air doesn’t offer. Fitbit Air wins on price at $99.99 with no required subscription, and is the lightest device in this comparison at 12g. Choose WHOOP for serious training and recovery coaching, Fitbit Air for casual wellness tracking without a recurring cost.
Is Polar LOOP or WHOOP better?
WHOOP has the stronger app and remains the benchmark for autodetection and coaching depth in this category. Polar LOOP is the cheaper option with no subscription required, and fits naturally alongside an existing Polar watch. Buy WHOOP for the deepest recovery insight, LOOP for a one-time purchase within the Polar ecosystem.
Fitbit Air vs Amazfit Helio Strap: which is cheaper?
Both launch at $99.99 with no required subscription, so there’s no price winner between them. Fitbit Air is lighter and has the widest band selection at launch. The Amazfit Helio Strap has a slightly more polished app and, via its Pro tier, unique HYROX-specific tracking that Fitbit Air doesn’t attempt.
Is WHOOP more accurate than Fitbit Air?
On the wrist, they were close in my testing. In a running interval session, WHOOP and Fitbit Air agreed with each other more closely than any other devices tested, and both matched the CIRQA within about a beat in a HYROX simulation and an outdoor ride. WHOOP’s advantage is its bicep band, which Fitbit Air lacks: on the biceps, WHOOP matched a reference heart rate source with a 0.98 correlation across 19 workouts.
Garmin watch or WHOOP: which should I buy?
A Garmin watch shows data on the wrist, records GPS and needs no subscription, and worn overnight it tracks sleep, HRV and training readiness. WHOOP has no screen or GPS and costs from $199 a year, but has the stronger recovery and coaching app. Athletes who already train with a Garmin can add CIRQA for the nights the watch stays off; WHOOP suits those who value its app over a screen and GPS.
CIRQA vs WHOOP: which should I buy?
CIRQA is the cheaper one-time purchase at $199.99 with no required subscription, and it’s the only device here with a physical button. WHOOP costs more over time but delivers a deeper app, stronger autodetection and, on the MG tier, ECG and blood pressure tracking. Choose CIRQA if you already own a Garmin watch and want a no-subscription companion, WHOOP for the more capable app and coaching.
CIRQA vs Fitbit Air: which is better?
CIRQA costs more upfront at $199.99 versus Fitbit Air’s $99.99, but includes a physical button and ties into the wider Garmin Connect ecosystem. Fitbit Air is lighter, cheaper and has the widest band range at launch. Existing Garmin owners get more value from CIRQA; everyone else, Fitbit Air is the easier buy.
CIRQA vs Amazfit Helio Strap: which should I buy?
Both are one-time purchases with no required subscription, though CIRQA is $199.99 against the base Helio Strap’s $99.99. CIRQA has a physical button and full Garmin ecosystem integration; the Helio Strap Pro adds unique HYROX-specific muscular load tracking that CIRQA doesn’t attempt. The right choice depends on which ecosystem, Garmin or Amazfit, you’re already in.
CIRQA vs Polar LOOP: which is better?
Both cost $199.99 with no subscription, so price isn’t the deciding factor. CIRQA has a physical button and feeds into Garmin Connect; Polar LOOP is buttonless with a plainer app but fits naturally alongside a Polar watch. Buy the one that matches the watch brand you already own.
Check current pricing on all five (supports the site, thank you):
Garmin CIRQA Smart Band
Screenless health and fitness band (no subscription required)
RRP £179.99
$199.99/€199.99
- use code:
Get it nowOrder now – Garmin CIRQA Smart Band Also sold direct by
Polar Loop
Arm-worn heart rate tracker

Amazfit Helio Strap
Sports tracker biceps band
Google Fitbit Air
Activity tracker
Last Updated on 27 October 2026 by tfk the5krunner

tfk is the founder and author of the5krunner, an independent endurance sports technology publication. With 20 years of hands-on testing of GPS watches and wearables, and competing in triathlons at an international age-group level, tfk provides in-depth expert analysis of fitness technology for serious athletes and endurance sport competitors. See the gear tfk uses. ID

Please check the Price and subscription table.
ha ha!
Polar LOOP definitely won’t work with Garmin Connect 😉 ty
Sorry, but you are just wrong: ‘Fitbit Air is simply too narrow for most people’ Who are these ‘most people’ you refer to?