# Polar Flow vs Just Train It

The clearest difference is in-app purchases: Just Train It at none against Polar Flow's 1. Just Train It also leads on iOS requirement (14.0 vs 17.0). Polar Flow's advantage is ads (none vs shown) and update cadence (monthly vs every 9 months). On price and device support there is nothing between them.

Both are free to download. Polar Flow sells 1 in-app purchase, starting at $8.99 per month. Just Train It asks for nothing beyond the download.

Polar Flow ships an update monthly, Just Train It every 9 months. The most recent releases landed on October 30, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Polar Flow | Just Train It |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (50K ratings)](https://appshunter.io/ios/app/polar-flow/id717172678/reviews)** | — |
| Number of ratings | **50K** | — |
| Positive reviews | 49.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 9 months |
| Monetization | Free with in-app purchases | — |
| Size | 189 MB | 127 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Polar Electro](https://appshunter.io/developer/532468555) | [Just Train It Oakville Inc.](https://appshunter.io/developer/1615113924) |

## 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


### Just Train It

[App page](https://appshunter.io/ios/app/just-train-it/id1140588470)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Polar Flow free?

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

### Is Just Train It free?

Just Train It is free to download, with no in-app purchases.

### Do Polar Flow or Just Train It have ads?

Just Train It shows ads; Polar Flow does not.

### Which is updated more often, Polar Flow or Just Train It?

Polar Flow ships an update monthly, and Just Train It every 9 months. Most recently, Polar Flow was updated on October 30, 2026 and Just Train It on October 26, 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.*