Polar A360 review

Polar's first heart rate monitoring tracker is not up to scratch

The Polar A360 is a fitness tracker that's the Finnish company's first to include its own built-in heart rate monitor technology. Unlike the Polar Loop and Loop 2, the A360 can deliver on the spot bpm (beats per minute) readings and can be used for dedicated heart rate based training.

It's also the first tracker from Polar to include a touchscreen display, giving it the look and feel of a Microsoft Band 2, rather than a Fitbit Charge HR. Bizarrely though, unlike the Band 2, there's no GPS onboard or any way to track distance away from counting steps. So it's pretty much the Loop plus on board heart rate tracking.

UPDATE: We've put the Polar A360's swimming and gym performance through their paces in more focused tests. Check out our gym tracker big test and swimming tech review for in-depth analysis.

It's priced at $199.95 putting it into Microsoft Band 2 price territory and is more expensive than the Charge HR. While we weren't exactly blown away by Polar's Loop trackers, there seems to be more going for the A360. Does it pay the price for leaving out some key features and is the heart rate monitoring up to scratch? We slapped it on for a couple of weeks to find out.

Polar A360: Design

Polar might think throwing Swarovski crystals on its trackers is the way to a make its hardware more attractive, but the A360 is more on the money with its looks. It still retains the rugged, durable feel of a sports watch, but the addition of a touchscreen gives it the kind of sleekness that makes me think of the Samsung Gear Fit. Despite its flaws, the Gear Fit did look like something you'd want to wear.

The matte band, at 23.5mm wide, is available in brighter colours if you don't fancy something a little more subdued around the wrist. The good news is that you don't need to take a pair of scissors to it, like you have to with the Loop to get the right fit. That's because it comes in small, medium and large band sizes, so it should accommodate most wrist sizes.

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Keeping things in place is a two-pronged clasp that has unfortunately come loose when I've worn it in bed on several occasions. The band can have a habit of picking up fluff as well, but it's nowhere near as bad as it is on the Moto 360 Sport or Sony SmartWatch 3, which use very similar looking bands.

Sitting inside the band is the tracking module, which also holds the colour touchscreen display flanked by silver ascents. It's a not so impressive 80 x 160 screen resolution but fortunately, with such a simplistic UI to deal with, that's more than suitable. It's bright, vibrant and, while you can't adjust screen brightness, visibility in bright sunlight or at night is no problem here. Screen responsiveness is on the money as well, registering even the sweatiest swipes with ease.

Polar's decision to offer a selection of watch faces that can display details in both horizontal and vertical screen orientation is a nice touch too.

There's just a single physical button on the left side, but its uses are limited. One press will simply turn the screen on or off and holding it down will let you pair it with Polar's H7 heart rate sensor chest strap (more on that later).

The module is removable as well, making it a little easier to charge and give the band a wipe down when it's not in use. I'd recommend making sure the module is clipped back into place properly as it can have the habit of leaving a gap between the tracker and the band when it's around your wrist. If you like taking a dip, the A360 is waterproof up to 30 metres, so you can take it swimming. There's not many trackers that can offer that although heart rate monitoring isn't fully optimised for tracking in the water.

On the bottom of the A360's module is where you'll find the optical heart rate sensor. It's Polar's own proprietary technology, but it works in a very similar way to a Fitbit or Mio's sensors, flashing lights to detect changes in blood volume to generate a reading. The icing on the cake though is the exposed Micro USB charging port, which means there's no silly charging cradle to carry around and that is a big plus.

Polar A360: Activity tracking

Aside from heart rate monitoring, the A360 offers some pretty standard activity tracking features. The big difference is the way the data is presented and analysed. It'll record steps, distance (steps only), active time, burnt calories and automatic sleep tracking.

On the device, that information is presented under the My Day section. This pulls together activity tracking and logged training sessions for the day letting you quickly glance at step counts, distance and calorie counts. Inside the Polar Flow companion app, it'll actually breakdown tracking into Resting, Sitting, Low, Medium and High intensity levels. It's actually quite a nice way to get an idea of how long you've been active or sitting at your desk at work.

Annoyingly, tracking data on the A360 is only stored for the day, so you'll need to go back to the app to view progress over a longer period of time. One of the nicest features though is that by tapping on the My Day data you can see what activity you'll need to perform to make your daily goal. That could be rope skipping for 20 minutes or finding time to fit in an hour-long jog.

To keep you motivated, there's a pretty useful inactivity alert that sends a purposeful vibration to the band after 55 minutes of inactivity and will collect the inactivity alerts inside the app like a collection of naughty stamps in a homework book.

Step tracking compared: Polar Flow (left) and Jawbone UP2 (right)

As far as tracking accuracy is concerned, the A360 handles things pretty well. The problem with pretty much every other fitness tracker is that no two devices are going to deliver identical results, simply because the monitoring is based on unique algorithms despite using identical motion sensors. The best you can ask is that it's not too far out with its readings.

Sleep tracking compared: Polar Flow (left) and Jawbone UP2 (right)

Up against the Jawbone UP2, step count was generally within 1-200 steps within Jawbone's data. It was a similar story with the automatic sleep tracking although there's not a lot happening on the analysis side on both fronts. The comments on how active your day was and how long you've been sitting for are nice touches but are quite easy to ignore. There are some elements here that Polar does really well, but there's definitely room for improvement, especially from a motivational perspective.

Polar A360: Heart rate tracking

Ultimately, monitoring heart rate from the wrist is the A360's big party piece. This is Polar's first wrist-worn device to have its own proprietary built optical heart rate sensor to help more accurately measure training intensity without having to wear a chest strap-style monitor.

It doesn't continuously monitor heart rate 24/7, but you can get on the spot readings. It's in training mode where Polar hopes you'll make the best use of it. This means you can work within specific heart rate zones or see more accurate readings based on the type of workout. Those different type of workouts or Sport Profiles can only be set up through the Polar Flow web app, where it's a case of picking a sport and it'll be synced to the device.

Interestingly, the A360 can also be paired with Polar's H7 heart rate monitor chest strap to activate Polar's Fitness Test. According to Polar, the H7 is more responsive to rapidly increasing or decreasing heart rate, which is the kind of thing you'd associate with interval training. That to me suggests Polar doesn't have much faith in the A360 and its ability to accurately cater for serious trainers here.

To test the resting heart rate monitoring accuracy, I put it up against Polar's own H7 paired with the Polar Beat app and readings as you can see from the image were way off.

Once you get out running with it, things get worse. I took the A360 out for several runs while also wearing the TomTom Spark and the Polar H7 heart rate monitor chest strap paired with the Polar Beat Android app. The screenshots below show how wide of the mark the readings were for one of the sessions. With the A360 falling well below the Spark and the H7, the heart rate zones recorded also appeared massively inaccurate. This wasn't a one off either.

Unfortunately, this is is one of the worst optical heart rate sensors I've tested.

Heart rate tracking compared: Polar A360 (left), Polar H7 (centre) and TomTom Spark (right)

You can, of course, use the heart rate training for other activities so I gave it a spin in the swimming pool as well. Optical heart rate sensors are not built for the water but you do get some useful data here and the app is able to determine whether the session benefited your aerobic fitness levels.

Ultimately though, if you care about accuracy, the A360 isn't quite there yet.

Polar A360: Polar Flow app

If you want to dig a little deeper into data, you need to spend some time in the Polar Flow mobile app, which is available for Android and iOS. As already mentioned, you'll need to dip into the Polar Flow web app as well to set up the training modes on the tracker and it'll give you a nicer view of the data graphs as well.

Unfortunately, there doesn't seem to be a way to use the A360 with the great Polar Beat app, but there is a decent amount of third party app support letting you connect to MyFitnessPal (iOS only), MayMyFitness, Apple Health and Google Fit. If you really want to explore training sessions, you can export data as TCX, GPX or CSV files, so it's covering a lot of bases here.

In terms of using the app, user interface displays data that's easy to digest, burying the extras when you scroll down. It's perhaps not as clean or as slick looking as Jawbone or Fitbit's apps, but it certainly doesn't overload you with information.

There's a dedicated button for breaking down data by day, week or month with a drop down menu letting you see an activity feed and a training diary with all your logged sessions. As far as customisation goes, you'll also need to venture here to turn do things like setting up an alarm. adjusting measurements and choosing your level of daily activity goal.

As companion apps go, it's a good experience all round but it doesn't bring anything radically new to the table.

Polar A360: Smartphone notifications

Like the Loop and Loop 2, the A360 supports display notifications from your iPhone or compatible Android phone. There's a list of compatible devices on over on the Polar website. This time though, there's a nice screen to view messages, emails, and notifications from third party apps. When a notification appears only the first line of the message appears along side a cross icon to close it. There's no way to scan through the entire message. So if you want to read it, you need to go back to your phone.

Polar A360
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The more annoying aspect of notification support is the delay in receiving the notification. There's a significant delay in some instances especially for instant messaging services. Worst of all, some messages or calendar appointments you've already dismissed can appear repeatedly on occasions.

Polar A360: Battery life

Where the A360 impresses, at least on paper, is battery performance. There's a 100mAh battery packed into the tracker's body that can deliver two weeks of power. That is based on using it only as an activity tracker and without notifications turned on. If you're going to take advantage of the notification support and heart rate-based training as well, it's closer to five days, which is pretty much what I found.

From an activity tracking perspective, that's a good showing, but I imagine that people looking at this will want to take advantage of the heart rate monitor, so the 5-6 day battery life based on one hour of training a day is more realistic and reflective of the performance.

Polar A360
By Polar
The Polar A360 could have been a brilliant addition to the current glut of activity trackers, but it's let down by some pretty major issues. The heart rate data accuracy issues along with the omission of distance tracking stand out as the biggest flaws. It's a shame really, because Polar has the basis of a good device here and is far more appealing than the Loop or Loop 2. If you've got the money to spend and you're a fan of Polar, the M400 feels like a better all-round option. You still get the activity tracking along with GPS and while you don't get a built-in heart rate monitor, it has a lot more going for it if you're willing to spend a little extra.

  • Bright, easy to ready screen
  • My Day breaks down activity nicely
  • Plenty of 3rd party app support
  • Heart rate data inaccuracies
  • Band not secure when sleeping
  • No distance tracking for running

What do you think?

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  • Gday21·

    Thanks a useful article, I already use the H7 & Polar Beat, but was worried about the accuracy of the sensor, plus how you manage the lack of GPS. So thanks for the insight.

  • Cintia·

    Hello and Thanks for your review :)

    Basically I was looking for a fitness watch without chest strap (I can’t seem to breed well while running with it).

    I am not a pro-runner and I run mostly in treadmill (10k to 15k) and exercize at gym (strenght and fitness classes). I wanted mostly to control aerobic and anaerobic exercise heart rate zones during my workouts.

    Reading the reviews about the Polar A360 (big no no on not counting distances) and the TOM TOM Runner Cardio and Tom Tom Spark I am more confused than ever…

    The bigger difference seems to be the lack of GPS but since the general opinion is that it’s doesn’t work well on treadmill (pace and km’s count) should I choose the A360?

    Between those 2 what would you recommend me to invest on?

    Greetings from Portugal…

    • Abk·

      I think you should go with the polar a360 because the TomTom spark is quite bulky and it doesn't look good on small wrists and you can add your sport profiles on the a360

  • Letty28·

    just purchased this a360 and battery life has only lasted 36 hours 3 x in a row, and I only used the heart rate based training for an hour a day, also the heart rate monitor is extremely inaccurate it recorded my heart rate increasing rapidly from 60 - 116 BPM whilst I was at rest!! on checking with my BP monitor heart rate was still 60! I am disappointed and it certainly is not worth the price

    • nikcsi21·

      You should contact customer service and tell your problem and get it checked under warranty , because what you described is not normal. I have mine for over 6 months now and nothing like that ever happened. Mine shows accurate BPM everytime I tested it. I think it is a decent device especially since they add more and more features to it with software updates.

  • erichjordan·

    I've recently bought the A360 especially to monitor my heart rate while swimming and so far have found it both accurate and helpful to my training. What I really like is that the HR is displayed in the band colour which makes life a great deal easier as without glasses I don't see to clearly. I'm enjoying my device. 

  • Bobe1912·

    Thanks for the comprehensive review Michael. You provide some good points of comparison with other devices. I'm most interested in the accuracy of its heart rate monitoring and suitability for interval training. I'll keep looking.

  • zdanko·

    HI, today I lost my A360, the wristband has been so badly manufactured that it fell off my wrist without noticing it. It happened several times in the past weeks. So I don't recommend it. If you loose it, you have to buy a new one for 45% discount, and be careful if you won't be in the US, then you're lost, since they won't ship it to where you've been.

  • zdanko·

    You will loose it, the wristband is quite bad.

  • Schrodinger·

    I have used it for a fee months, an I agree, the wristband is very bad, and now i got eczema from the wristband, so I Can't use it.

  • Dyann·

    I have been using the A360 for a month now.  I had the Fitbit HR, but it was awful with heart rate tracking.   Bought the H7 Bluetooth strap and uploaded Polarbeat, and my heart rate jumps all over the place, from 40-200 in a matter of seconds, which is why I thought I would try the A360.  So far I like it, but I would like to be able to get a more accurate heart rate sensor.  I don't run.  I mainly do HIit workouts, so some of the devices just don't fit for me.  What do you recommend?

  • Dyann·

    I have been using the A360 for about a month.  I haven't had any problems with it.  I had Fitbit Hr but was too inaccurate with HR so I bought the H7 Bluetooth strap, but it is all over the place..20-200 bpm in a matter of seconds.  I am looking for something accurate for hr.  I don't run, and just mainly do Hiit workouts.  Most of these are geared for runners.  Now after reading this article, I am questioning the accuracy of the hr sensor.  Looking at the comparison above, looks very familiar.  The zones are different.  I can hardly get into the red zone with the A360.