# iCardio Workout Tracker vs Zone 2

The clearest difference is rating: iCardio Workout Tracker at 4.8 against Zone 2's 4.6. iCardio Workout Tracker also leads on ratings volume (3.4K vs 243). Zone 2's advantage is review sentiment (74% vs 63%). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. iCardio Workout Tracker sells 4 in-app purchases, starting at $4.99 per month and Zone 2 sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

iCardio Workout Tracker holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: iCardio Workout Tracker has 3.4K ratings behind it against 243, so its average is the more settled of the two. Written reviews complicate that: 63% of iCardio Workout Tracker's written reviews are positive against 74% of Zone 2's, so the app with the better star average is not the one people write more warmly about.

iCardio Workout Tracker ships an update every 11 days, Zone 2 weekly. The most recent releases landed on October 21, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | iCardio Workout Tracker | Zone 2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (3.4K ratings)](https://appshunter.io/ios/app/icardio-workout-tracker/id314841648/reviews)** | [4.6 (243 ratings)](https://appshunter.io/ios/app/zone-2-heart-rate-training/id6444690892/reviews) |
| Number of ratings | **3.4K** | 243 |
| Positive reviews | 63.2% of reviews | **74.1% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 11 days | **Weekly** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 85 MB | 15 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Fitdigits Inc](https://appshunter.io/developer/1126857444) | [Shannon Bolick](https://appshunter.io/developer/976434392) |

## What reviewers say

### iCardio Workout Tracker

[App page](https://appshunter.io/ios/app/icardio-workout-tracker/id314841648)

This app helps you train smarter by using your heart rate data. It tracks workouts, provides real-time feedback, and integrates with wearables and Apple Health to offer insights into your performance and progress.

**Highlights:** Heart rate zone tracking, GPS route mapping, Voice coaching, Apple Watch & Health integration, Real-time workout sharing, Custom fitness assessments

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Star Monthly | $4.99 | per month |
| Pro Plus | $24.99 | per year |
| Star | $29.99 | per year |
| Plus | $6.99 | one-time |

**What reviewers like**

- 👍 Great app
- 🚀 Accurate tracking
- 💡 Customizable screens
- 🚀 Reliable connection
- 👍 Motivating

**What reviewers complain about**

- 🐛 Crashes and sync issues
- 🔋 Battery drain
- 🔒 Subscription model
- 🐛 Inconsistent performance
- 🐛 Sensor connection problems

**Reported bugs**

- Garmin ANT+ connectivity issues
- Incorrect calorie/distance tracking
- Unreliable heart rate monitoring

**Requested features**

- Lap/split time tracking
- Multi-user profiles
- Treadmill/elliptical integration
- More customization options
- Improved Apple Watch integration


### Zone 2

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

This app helps you track your weekly workout time spent in the Zone 2 heart rate range. It provides detailed tracking, connectivity with various heart rate monitors and Strava, and real-time feedback on your progress towards your fitness goals.

**Highlights:** Weekly, monthly, and daily zone tracking, Strava connectivity, Home and Lock Screen widgets, Bluetooth heart rate monitor compatibility, Apple Watch app with live feedback, Heart rate zone calculator

**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


## Frequently asked questions

### Is iCardio Workout Tracker free?

iCardio Workout Tracker is free to download, with in-app purchases available.

### Is Zone 2 free?

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

### Which has better reviews, iCardio Workout Tracker or Zone 2?

iCardio Workout Tracker is rated higher. iCardio Workout Tracker averages 4.8 out of 5 from 3.4K ratings, while Zone 2 averages 4.6 from 243 ratings.

### Do iCardio Workout Tracker or Zone 2 have ads?

Neither iCardio Workout Tracker nor Zone 2 shows ads.

### Which is updated more often, iCardio Workout Tracker or Zone 2?

iCardio Workout Tracker ships an update every 11 days, and Zone 2 weekly. Most recently, iCardio Workout Tracker was updated on October 21, 2026 and Zone 2 on October 27, 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.*