Polar Flow is a sports, fitness, and activity analyzer to be used with Polar GPS sports watches, fitness trackers, and activity trackers.* Follow your training and activity and instantly see your achievements. You can see all of your training and activity data on your phone on the go, and sync them wirelessly to the Polar Flow web service.
*Compatible devices: Balance, Loop, Loop 2, Loop Crystal, A300, A360, A370, M200, M400, M430, M450, M460, M600, V650, and V800. To learn more about compatibility, please visit

"I found Polar Flow to be a terrific complement to the Polar devices I tested, and it is completely in keeping with Polar's detail-oriented, elite-athlete focus on heart rate training and recovery." – Lifewire
"Behind the devices is Polar Flow, a hugely powerful app that holds the key to better running." – Wareable

Key benefits from using Polar Flow together with Polar products:

◆ Get a quick overview of your training on the go.
◆ Analyze every detail of your training session to maximize your performance.
◆ Create structured workouts and training targets, sync them to your device and get guidance during your workout.
◆ See your training data with weekly calendar summaries.
◆ Add and modify sport profiles easily. Choose from over 100 sports.
◆ See a full list of your past training sessions.

◆ Follow your activity 24/7.
◆ Get a complete overview of your day with the combination of activity tracking and continuous heart rate monitoring**.
◆ Find out what you're missing from your daily goal and get guidance how to reach it.
◆ See the active time, burned calories, steps, and distance from steps.
◆ Learn about your sleeping habits with Polar Sleep Plus™: the intelligent sleep measurement automatically detects the timing, amount, and quality of your sleep. You'll also receive feedback on your sleep so that you can make changes towards better sleep***.
◆ Receive inactivity alerts encouraging you to get up and move.
**Continuous heart rate is available for Polar A370, Polar M430
***Sleep Plus is available for Polar A370, Polar M430, Polar M600
Please note that M450 and V650 are cycling computers and do not support activity tracking.

Balance, Loop, Loop 2, Loop Crystal, A300, A360, A370, M200, M400, M430, M450, M460, M600, V650, and V800 all sync with the Polar Flow app using Bluetooth Smart.
Polar Flow app allows you to share some of your wellness data with Apple Health. This includes details of your training, your heart rate, and steps.

DOWNLOAD Polar Flow now and turn your phone into a training and activity analyzer. You can find more info at

Twitter: @polarglobal

Find out more about Polar products at

What's New

Version 3.8.0

We’ve smashed a few bugs to improve your experience of using the Flow app. Happy training :)

Ratings and Reviews

4.6 out of 5
13.5K Ratings
13.5K Ratings

Questionable Data, Uncalibrateable

I bought the 430 for the wrist based heartrate monitoring and im extremely satisfied with that.

With that said when i run on the treadmill the data collected is extremely questionable. It has never given me an accurate distance. Today’s run it captured 3.5miles of 5. Unfortunately the flow app doesn’t allow me to calibrate for my stride/Light footstrike and correct the inaccurate distance. This means you’re left with a completely worthless run data history. Worse is the questions it raises about the other data captured. If it missed 1.5miles making it completely off on your pace, how accurate is the cadence data. Also best of luck if you forget to stop your workout because there is no way to correct the inaccurate data. I find myself depending on a lot of other apps just like when i had my polar FT1. The polar flow app needs a lot of enhancements and leaves much to be desired from this runner.


Couple of issues, otherwise great

1. When I wear the V800 watch to sleep, it doesn’t always track my sleep correctly. For example, I fell asleep on the couch pretty early then woke up and got in bed late. It only counted the time after I went to bed as sleep.
2. Elevation isn’t shown on the workout in the app, I have to go to the full website to see it.
3. The HR monitor strap isn’t the best - it misses measurements; I actually need to test it with the phone as well as the watch to try and isolate the issue.

I’ve mostly worn the watch as a daily tracker and used it with HR monitor for running, bike rides, hiking, etc. and overall, it’s pretty good, no major issues. My first V800 melted when I tried to recharge it and they replaced it. The second one seems to be holding up really well.

Kerby Skurat

You track your business but not your body?

I’m a business guy and I love the tracking that we do to ensure that our business is running as smoothly as it should be. I had never really compared my body to my business, but in reality my body needs to be tracked just like my business does. The profit is in the numbers. And in this case weight loss is by way of tracking your food and your numbers. If you couple this app with my fitness pal for food tracking, it’s nearly impossible not to go in the direction that you want to.


Polar Electro Oy
120.5 MB
Health & Fitness
Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, Czech, Danish, Dutch, Finnish, French, German, Indonesian, Italian, Japanese, Korean, Norwegian Bokmål, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Swedish, Turkish
Age Rating
Rated 4+
This app may use your location even when it isn't open, which can decrease battery life.
© Polar Electro Oy


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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