# Polar Flow vs ECG Suite

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.

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.

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.

Polar Flow ships an update monthly, ECG Suite every 6 days. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Polar Flow | ECG Suite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (50K ratings)](https://appshunter.io/ios/app/polar-flow/id717172678/reviews) | **[4.7 (6 ratings)](https://appshunter.io/ios/app/ecg-suite/id6759203712/reviews)** |
| Number of ratings | **50K** | 6 |
| Positive reviews | 49.6% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 6 days** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 189 MB | 51 MB |
| Requires iOS | 17.0 | **14.3** |
| Devices | iPhone, iPad | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Polar Electro](https://appshunter.io/developer/532468555) | [文西 徐](https://appshunter.io/developer/1874614501) |

## What reviewers say

### Polar Flow

[App page](https://appshunter.io/ios/app/polar-flow/id717172678)

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:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Polar Fitness Program | $8.99 | per month |

**What reviewers like**

- 🚀 Accurate heart rate monitoring
- 🔋 Good battery life
- 👍 Detailed workout data and analysis
- 👍 Intuitive and user-friendly app
- 👍 Seamless syncing with Polar devices

**What reviewers complain about**

- 🐛 Connectivity and syncing issues
- 🐛 Unreliable sleep tracking
- 🐛 Slow GPS initialization
- 👎 Cluttered and confusing app interface
- 👎 Limited customization options

**Reported bugs**

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

**Requested features**

- 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

[App page](https://appshunter.io/ios/app/ecg-suite/id6759203712)

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:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Annual | $9.99 | per year |


## Frequently asked 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 9, 2026 and ECG Suite on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*