# Zone 2 vs FlatoMeter

The clearest difference is in-app purchases: FlatoMeter at none against Zone 2's 2. FlatoMeter also leads on iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Zone 2 sells 2 in-app purchases, starting at $4.99 per month. FlatoMeter asks for nothing beyond the download.

## The numbers

| Metric | Zone 2 | FlatoMeter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (243 ratings)](https://appshunter.io/ios/app/zone-2-heart-rate-training/id6444690892/reviews)** | — |
| Number of ratings | **243** | — |
| Positive reviews | 74.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | — |
| Monetization | Free with in-app purchases | — |
| Size | 15 MB | 51 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shannon Bolick](https://appshunter.io/developer/976434392) | [Luc Gruson](https://appshunter.io/developer/6785540650) |

## What reviewers say

### Zone 2

[App page](https://appshunter.io/ios/app/zone-2-heart-rate-training/id6444690892)

This app tracks your weekly workout time spent in Zone 2 heart rate, optimizing endurance and fat-burning. It connects with various Bluetooth heart rate monitors and Apple Watch for live feedback and integrates with existing workout data.

**Highlights:** Weekly, monthly, daily zone tracking, Strava connectivity, Home and Lock Screen widgets, Bluetooth HR monitor compatibility, Apple Watch app with live tracking, Heart rate zone calculator, Live activities on Dynamic Island/Lock Screen

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All - Monthly | $4.99 | per month |
| Unlock All - Yearly | $39.99 | per year |

**What reviewers like**

- 👍 Simple and intuitive user interface
- ⏱️ Accurate real-time zone tracking during workouts
- 📊 Comprehensive cumulative time tracking by zone
- 🎯 Customizable heart rate zones and weekly goals
- 🔗 Seamless integration with Apple Health and HR monitors

**What reviewers complain about**

- 🐛 Frequent Bluetooth disconnections from HR monitors
- 🐛 App crashes and freezes mid-workout
- 🐛 Tracking stops randomly during workouts
- 📵 Portrait-only orientation (doesn't support landscape properly)
- 💳 Pricing confusion and unexpected charges

**Reported bugs**

- App crashes on iPhone 11 Pro and iPhone 16 with latest iOS
- Watch disconnects constantly during workouts
- Tracking stops mid-workout without saving data
- Bluetooth connectivity issues with Polar and other HR monitors
- App freezes at various points during exercise

**Requested features**

- Calorie burn tracking and display
- Landscape orientation support for treadmills and rowers
- More specific workout categories beyond provided options
- Music control integration (play, pause, skip)
- Step tracking during workouts


### FlatoMeter

[App page](https://appshunter.io/ios/app/flatometer/id6785540648)

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

**In-app purchases:** none


## Frequently asked questions

### Is Zone 2 free?

Zone 2 is free to download, with in-app purchases available.

### Is FlatoMeter free?

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

### Do Zone 2 or FlatoMeter have ads?

Neither Zone 2 nor FlatoMeter shows ads.

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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.*