Comparison

Polar Flow vs ECG Suite

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Polar Flow

This app helps you track daily activity, analyze workouts with detailed metrics, and gain insights into sleep patterns and recovery. It allows for device management, route planning, and seamless syncing with other popular fitness platforms.

Highlights
  • Activity Tracking
  • Training Analysis
  • Sleep Insights
  • Training Load & Recovery
  • Device & Profile Management
  • Wireless Syncing
  • Third-Party Service Integration
Features
Read full description

Polar Flow: Your Personal Sports, Fitness, and Health Companion The exclusive app designed to maximize the potential of your Polar devices. Key Features: Activity Tracking: Monitor your daily activity, steps, calories burned, and distance to stay motivated throughout the day. Training Analysis: Dive deep into your workouts with detailed data on heart rate, speed, pace, distance, power, and more. Understand the impact of each session and optimize your training routines. Sleep Insights: Discover how well you sleep with advanced sleep tracking. Get feedback on sleep stages and quality to improve your rest and recovery. See how sleep boosts your day and track skin temperature changes. Training Load & Recovery: Understand how your training sessions strain your body and get recommendations on recovery time to prevent overtraining. Manage your watch and profile: Customize and manage your Polar device, Sports profiles for different activities, Routes, and Training Targets. Wireless Syncing: Automatically sync data from your Polar devices for real-time updates, notifications, and other insights. Stay Connected: Connect your profile and sync your data with Strava, TrainingPeaks, Adidas, komoot, and many other services. Why Choose Polar Flow? Personalized Guidance: Receive personalized feedback and guidance and understand your progress. Comprehensive Ecosystem: Integrates seamlessly with Polar watches, heart rate monitors, and more for a holistic experience. User-Friendly Interface: Navigate your data effortlessly with our intuitive and clean design. Notification support: Your Polar watch will receive the same notifications as your phone screen—incoming calls, messages, and app notifications. Secure and Private: Your data is safely stored and protected, giving you peace of mind as you focus on your journey. 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. Please note Polar Flow app is not intended for medical or diagnostic use. Get Started Today! Download Polar Flow and unlock the full potential of your Polar devices. You can find more info at https://www.polar.com/flow Connect with us! Instagram: www.instagram.com/polarglobal Facebook: www.facebook.com/polarglobal YouTube: www.youtube.com/polarglobal Find out more about Polar products at https://www.polar.com/en/products

About

ECG Suite

Continuously track your heart rate patterns for fitness monitoring and research. Connect your Apple Watch, Polar H10, or Bluetooth strap to capture ECG waveforms and BPM data. Organize historical data into easy-to-understand daily, weekly, and monthly trends.

Highlights
  • Long-term continuous heart rate tracking
  • Real-time ECG waveform capture
  • RR interval data recording
  • BPM monitoring via Bluetooth strap
  • Historical data organization
  • Daily, weekly, and monthly trend visualization
Features
Read full description

Gain valuable insights into your heart rate patterns with long-term, continuous tracking—designed for fitness monitoring and experimental research only. Seamlessly connect your Apple Watch, or Polar H10 device to capture real-time ECG waveforms and RR interval data, or pair a Bluetooth heart rate strap for reliable BPM monitoring. Our app excels at organizing historical data, turning raw numbers into easy-to-read daily, weekly, and monthly trends. ECG Suite Pro Subscription: Some premium features — including real-time HR monitoring, ECG recording & analysis, HRV tracking, data export, and heart rate alerts — require an ECG Suite Pro subscription. - Monthly: $0.99/month - Annual: $9.99/year Payment will be charged to your Apple ID account. Subscription auto-renews unless cancelled at least 24 hours before the end of the current period. Manage subscriptions in Settings > Apple ID > Subscriptions. Privacy Policy: https://sites.google.com/view/ecg-suite/privacy-policy?authuser=0 Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Polar Flow4 screens
ECG Suite4 screens

Verdict

The call

The clearest difference is ratings volume: Polar Flow at 50K against ECG Suite's 6. Polar Flow also leads on monetization model (free with in-app purchases vs paid). ECG Suite's advantage is update cadence (every 6 days vs monthly) and iOS requirement (14.3 vs 17.0). On price, rating, review sentiment and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Polar Flow sells 1 in-app purchase, starting at $8.99 per month and ECG Suite sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for Polar Flow against 4.7 for ECG Suite. That said, the two scores are not equally well evidenced: Polar Flow has 50K ratings behind it against 6, so its average is the more settled of the two. Written reviews split almost evenly too, at 50% and 50% positive.

UpkeepUpdate frequency

Polar Flow ships an update monthly, ECG Suite every 6 days. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
Polar Flow versus ECG Suite: the parameters behind the verdict, then further details
ParameterPolar FlowECG Suite
PriceFreeFree
Rating4.6 (50K ratings)4.7 (6 ratings) — better
Positive reviews49.6% of reviews50.0% of reviews — better
Number of ratings50K — better6
Update frequencyMonthlyEvery 6 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPadiPhone, iPod, Apple Watch — better
Requires iOS17.014.3 — better
Further details — not scored
Size189 MB51 MB
Age rating4+4+
DeveloperPolar Electro文西 徐

Customer experience

Polar Flow

All ratings50,010 ratings
Positive91.3%
Neutral4.5%
Negative4.2%
Written reviews2,219 reviews
Positive49.6%
Neutral11.2%
Negative39.2%

ECG Suite

All ratings6 ratings
Positive83.3%
Neutral16.7%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral50.0%
Negative0.0%

Bugs and requests

Polar Flow

Reported bugs

3 issues
  • App crashes during syncing
  • Inconsistent data sync between watch and app
  • Firmware updates causing loss of user data

Requested features

4 requests
  • Ability to manually edit workout data
  • Integration with more third-party apps
  • More advanced training programs and coaching
  • Improved sleep tracking and analysis

ECG Suite

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Polar Flow

Subscriptions1
  • Polar Fitness Program1 Month trial$8.991 Month
2 purchases

ECG Suite

Subscriptions2
  • Monthly7 Days trial$0.991 Month
  • Annual7 Days trial$9.991 Year

Questions

Is Polar Flow free?
Polar Flow is free to download, with in-app purchases available.
Is ECG Suite free?
ECG Suite is free to download, with in-app purchases available.
Which has better reviews, Polar Flow or ECG Suite?
ECG Suite is rated higher. Polar Flow averages 4.6 out of 5 from 50K ratings, while ECG Suite averages 4.7 from 6 ratings.
Do Polar Flow or ECG Suite have ads?
Neither Polar Flow nor ECG Suite shows ads.
Which is updated more often, Polar Flow or ECG Suite?
Polar Flow ships an update monthly, and ECG Suite every 6 days. Most recently, Polar Flow was updated on November 8, 2026 and ECG Suite on October 31, 2026.

Other comparisons