# Polar Flow vs COROS

The clearest difference is in-app purchases: COROS at none against Polar Flow's 1. COROS also leads on iOS requirement (14.0 vs 17.0). Polar Flow's advantage is ratings volume (50K vs 788) and rating (4.6 vs 4.3). On price, review sentiment, update cadence 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. COROS asks for nothing beyond the download.

Polar Flow holds the better App Store score, 4.6 against 4.3. That said, the two scores are not equally well evidenced: Polar Flow has 50K ratings behind it against 788, so its average is the more settled of the two. Written reviews complicate that: 50% of Polar Flow's written reviews are positive against 54% of COROS's, so the app with the better star average is not the one people write more warmly about.

Polar Flow ships an update monthly, COROS every 2 weeks. The most recent releases landed on September 26, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Polar Flow | COROS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (50K ratings)](https://appshunter.io/ios/app/polar-flow/id717172678/reviews)** | [4.3 (788 ratings)](https://appshunter.io/ios/app/coros/id1277625343/reviews) |
| Number of ratings | **50K** | 788 |
| Positive reviews | 49.6% of reviews | **54.3% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 188 MB | 825 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Polar Electro](https://appshunter.io/developer/532468555) | [COROS Wearables Inc.](https://appshunter.io/developer/992834306) |

## 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


### COROS

[App page](https://appshunter.io/ios/app/coros/id1277625343)

Enhance your fitness journey with detailed daily data, activity summaries, and advanced navigation tools. Customize your devices, download training plans, and seamlessly sync with popular third-party health platforms.

**Highlights:** Daily data tracking (sleep, steps, calories), Activity summaries for all sports, Map and route management, Device and personal settings customization, Third-party app integration

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Excellent battery life
- 👍 Intuitive and easy to use app
- 🚀 Quick sync with watch
- 👍 Detailed data and metrics
- 👍 Responsive customer service

**What reviewers complain about**

- 🐛 Connectivity issues with watch
- 🐛 Inaccurate heart rate tracking
- 🐛 Syncing problems with third-party apps
- 🐛 Buggy after recent updates
- 🐛 Confusing user interface changes

**Reported bugs**

- App crashes frequently
- Inability to log in or sync data
- Inconsistent data between watch and app
- Elevation/GPS tracking issues
- Strength training mode not working properly

**Requested features**

- Add more watch face options
- Improve sleep tracking accuracy
- Integrate with Apple Health app
- Add ability to edit/delete activities
- Provide more customization options


## Frequently asked questions

### Is Polar Flow free?

Polar Flow is free to download, with in-app purchases available.

### Is COROS free?

COROS is free to download, with no in-app purchases.

### Which has better reviews, Polar Flow or COROS?

Polar Flow is rated higher. Polar Flow averages 4.6 out of 5 from 50K ratings, while COROS averages 4.3 from 788 ratings.

### Do Polar Flow or COROS have ads?

Neither Polar Flow nor COROS shows ads.

### Which is updated more often, Polar Flow or COROS?

Polar Flow ships an update monthly, and COROS every 2 weeks. Most recently, Polar Flow was updated on September 26, 2026 and COROS on September 25, 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.*