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Polar Loop: One minute review

The Polar Loop is, on the surface, what a lot of folks want. It’s a lifestyle-friendly wearable like the popular Whoop MG, but one that doesn’t come with a mandatory monthly subscription.

It’s screen-free, with a lightweight body and fabric strap for maxed-out comfort. Polar has kept the Loop simple, offering a limited set of features rather than trying to cram in lots of extras. It tracks your sleep, your steps and has a crack at recognising and logging activity sessions — runs, walks and so on. This part is patchy, but the Polar Loop was never going to be that big a hit as a one of the best fitness tracker with the hardcore exerciser crowd anyway.

The Polar Loop’s issues are largely software-based. You have to get on with the Polar app to make the Loop fun to use, and its interface and presentation of data could really do with a rethink. This is planned for the future, but for now, this isn’t quite the Whoop-killer you may be hoping for. It’s shown up on that front by the cheaper Amazfit Helio Strap.

As is, what you get is a decent screen less tracker, but one that may be better later into its lifespan – after a software update, at least.

Polar Loop: Specifications

Component

Polar Loop

Price

$199 / £149.50 / AU$299

Dimensions

42 x 27 x 9mm

Weight

29g with band

Case/bezel

Stainless steel/Plastic

Display

N/A

GPS

N/A

Battery life

Up to 8 days

Connection

Bluetooth

Water resistant

Yes, 3ATM

Polar Loop: Price and Availability

(Image credit: Future / Andrew Williams)

• $199 in the US
• £149.50 in the UK
• AU$299 in Australia

The Polar Loop launched in early September 2025 as a subscription-free alternative to the Whoop band. This is a little over a year since the launch of the Polar 360, a business-oriented wellness wearable that’s ultimately pretty similar to this consumer version. It costs $199 in the US, £149.50 in the UK and AU$299 in Australia.

While there are no explicit ongoing costs, there is a totally optional subscription called Polar Fitness Program, which works out an adaptive training plan for you. This costs 9.99 Euro a month after a free trial. This is far better value than the Whoop, which doesn’t sell you the device at all – just an expensive subscription. But for a fitness tracker that doesn’t actually do a lot, it’s still quite highly-priced.

• Value score: 3.5/5

Polar Loop: Design

(Image credit: Future / Andrew Williams)

• Screenless
• Steel accents
• Comfortable stretchy bands

The Polar Loop is similar enough to the Whoop band that Whoop has sued Polar claiming the company nicked its design. However, what this really boils down to is a couple of conventions already seen across the screenless wearables landscape.

Polar uses a fabric strap that weaves, buckle-like, over the wearable’s main unit. It covers where the screen would be in a normal watch. The Loop uses a velcro-style fastener and is clearly designed to look like a lifestyle wearable over a hardcore fitness gadget. While much of the core brick is plastic, the top and outer parts are brushed bronze-shade steel. It’s there to provide a touch of class.

These screen-free wearables are intended to be the kind of gadget you set and forget, at least until the battery runs out. The Polar Loop weighs 29g, strap included, light enough not to pick up any real momentum as you swing your arms unlike a watch like the Apple Watch Ultra, which weighs close to 60g. But you are still gong to see those familiar skin indents when you occasionally take the watch off, pressing its contours into your wrist.

Is it comfy? Sure, these slightly stretchy fabric bands are ace for comfort. But I’ve found the Amazfit Helio Band slightly easier to forget I’m wearing, no doubt because it’s even lighter: just 20g.

The Polar Loop has no buttons and no LED status indicator. You can’t interact with it if you try. There’s not even a vibration motor: it’s about as stripped-back as Polar could make it. Water resistance is rated at WR30, which in other wearables is often seen as not enough for safe swimming, while Polar says the Loop is fine for “bathing and swimming” under the ISO22810 standard, just not diving or snorkelling.

• Design score: 4/5

Polar Loop: Features

(Image credit: Future / Andrew Williams)

• No subscription
• Very little interaction
• Precision Prime heart rate sensor from 2018

One of the core appeals of the Polar Loop is, of course, that there is no mandatory subscription. There is a paid part of the app, though.

It’s called Polar Fitness Program, which costs around $11 a month (9.99 Euro). This launched in April 2025, provides tailored workout plans. It would work much better when paired with Polar’s more conventional fitness watches, like the Polar Grit X2, than a Loop.

The Polar Loop’s own feature set is very stripped-back. You can’t, for example, make the watch broadcast its heart rate data to be used by another device. There’s no altimeter, so counting of steps climbed is not recorded. You cannot use the Polar Loop as an alarm as there’s no vibration motor. When the Polar Loop is running low on battery you’ll simply get an incessant reminder to charge on your phone. You know the funny bit? Polar actually released a tracker called the Loop 2 in 2015 that did have vibration, and a half-hidden screen made up of 85 LEDs.

Neither that band nor the Polar Loop records blood oxygenation data either, despite the heart rate array making use of green, red and orange LEDs. Polar calls this its Precision Prime array, and it has been around for absolutely ages. A similar design was found in 2018’s Polar Vantage V. That’s a lifetime ago in tech terms, but the basics still work well.

• Features score: 2.5/5

Polar Loop: Performance

(Image credit: Future / Andrew Williams)

• 8 days of battery life
• Some activity tracking errors
• HR data testing similar to Garmin Elevate V5 sensor

Despite the lack of a screen, Polar says the Loop lasts eight days, which is actually a bit less than some of its watches with displays. This is basically on the money. You can expect it to last around a week. With no GPS or screen, there should be little variation in how long it lasts based on your activity level.

Like any wearable, the Polar Loop is heavily reliant on its heart rate sensor for any data beyond your steps. This wearable has a pretty good one, despite using older hardware. While this is not a replacement for a full-on runner’s watch due to its lack of GPS, its HR data during runs is pretty similar to that of a Garmin Forerunner 970 (one of the best Garmin watches) and its Elevate V5 sensor, wore concurrently during most of my testing.

The Polar Loop doesn’t tend to mess up the start of workouts, or show unexpected major HR spikes during the work day when you do little more than potter about. There was one unexpected spike during a tracked run, but in general the results are solid here.

By default, the Polar Loop will record basic stats 24/7, and then automatically log any slightly extended stretches it believes you’re exercising. Go for a 12-minute walk? You can expect to see that pop up in the Polar app. It’s not entirely flawless, though; during one run, the Loop only clocked half of the hour-and-change workout, seemingly stopping during a brief break, only to fail to register the second half. The durations of some sessions are off too, although you can always take a more active approach to tracking: in the Polar phone app, you can manually start a tracked session, select the Loop, and use it as the source for HR data.

That aside, the Polar Loop has a good stab at recording your daily steps. And it of course tracks sleep, too, estimating your time spent in the light, deep and REM sleep zones, and records interruptions. The Polar Loop is more sensitive to these than another wearable’s full-on wakeful moments detection, so you may well see your sleep records peppered with these tiny interruption blips.

The lead stats Polar wants you to focus on are sleep duration, sleep solidity and regeneration — basically how much that sleep is getting your body back where it needs to be. However, there’s also an ANS Charge (autonomous nervous system charge) section in which you can check out breathing rate and heart rate variability.

All the basic data is here, and it’s sound enough. The Polar Loop’s biggest issue is the phone app isn’t really all that enjoyable to use, may look dated to some and doesn’t really direct the user that well as to what they should focus on.

The app’s home screen is Diary, which acts like a feed of your day, showing recent auto-tracked exercises, your step count and so on, in semi-chronological order. This is not as effective as the software in Amazfit’s rival Helio Strap app, which is more intuitive and has a handy traffic light-style system to alert you to any stats that may be out of the ordinary.

Screen-free wearables are massively reliant on their apps for the overall quality of experience. And Polar’s could do with some work. It’s just not that inviting a space to hang out in. Polar does plan to fully revamp the app in future, but right now we can only work with that we have.

• Performance score: 3.5/5

Polar Loop: Scorecard

Category

Comment

Score

Value

The lack of a forced subscription is good but this is not the most aggressively priced tracker around.

3.5/5

Design

It’s comfortable, it looks decent and has some higher-grade steel elements, plus you get a choice of colours.

4/5

Features

A watch like this doesn’t need scads of features, but it does miss out on a few elements that could be handy.

2.5/5

Performance

Heart rate accuracy is decent but you may not want to rely on auto exercise recognition for accurate session logging.

3/5

Polar Loop: Should I buy?Buy it if...

You like its style

An important factor here is how the Loop doesn’t look like a fitness watch, with a two-tone fabric outer strap with steel accents.

You want a subscription-free experience

While you can pay for a training plan subscription, there’s no mandatory subscription with a Polar Loop.

You want pure passive tracking

With no screen, and even no vibrate or buttons, this is a zero-interaction wearable for those who want no wrist distractions.

Don’t buy it if…

You are expecting big health insights

At the time of review the Loop doesn’t present its data in the most cogent way, and also has fairly basic hardware.

You want better software before buying

While Polar has plans to overhaul its software and interface, we don’t know when that will happen at the time of review.

Also consider

Whoop MG

The screen-free band that made this category sing, but requires a pricey subscription.

Read our full Whoop MG review

First reviewed: December 2025

We tested the Polar Loop, the subscription-free Whoop alternative.

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