# Polar Flow vs Pool Clock

The clearest difference is price: Polar Flow at Free against Pool Clock's $0.99. Polar Flow also leads on rating (4.6 vs 3.8) and update cadence (monthly vs every 25 months). Pool Clock's advantage is in-app purchases (none vs 1) and review sentiment (75% vs 49%). On ads and device support there is nothing between them.

Polar Flow is free to download; Pool Clock costs $0.99 up front. Polar Flow sells 1 in-app purchase, starting at $8.99 per month. Pool Clock asks for nothing beyond the download.

Polar Flow holds the better App Store score, 4.6 against 3.8. That said, the two scores are not equally well evidenced: Polar Flow has 50K ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 49% of Polar Flow's written reviews are positive against 75% of Pool Clock's, so the app with the better star average is not the one people write more warmly about.

Polar Flow ships an update monthly, Pool Clock every 25 months. The most recent releases landed on October 2, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Polar Flow | Pool Clock |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.6 (50K ratings)](https://appshunter.io/ios/app/polar-flow/id717172678/reviews)** | [3.8 (4 ratings)](https://appshunter.io/ios/app/pool-clock/id1462481623/reviews) |
| Number of ratings | **50K** | 4 |
| Positive reviews | 49.4% of reviews | **75.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 25 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 189 MB | 3 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Polar Electro](https://appshunter.io/developer/532468555) | [Sohta Itoh](https://appshunter.io/developer/965803614) |

## 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


### Pool Clock

[App page](https://appshunter.io/ios/app/pool-clock/id1462481623)

This app simulates a traditional swimming pace clock for interval training. It helps swimmers track intervals, set preparation times, and manage repetitions. Features include an optional digital clock and sound alerts.

**Highlights:** Interval training timer, Customizable interval repetitions, Preparation time setting, Optional digital clock display, Countdown beep sound, Screen stays on during use

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Polar Flow free?

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

### Is Pool Clock free?

Pool Clock costs $0.99, with no in-app purchases.

### Which has better reviews, Polar Flow or Pool Clock?

Polar Flow is rated higher. Polar Flow averages 4.6 out of 5 from 50K ratings, while Pool Clock averages 3.8 from 4 ratings.

### Do Polar Flow or Pool Clock have ads?

Neither Polar Flow nor Pool Clock shows ads.

### Which is updated more often, Polar Flow or Pool Clock?

Polar Flow ships an update monthly, and Pool Clock every 25 months. Most recently, Polar Flow was updated on October 2, 2026 and Pool Clock on October 1, 2026.

---

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