# ErgData vs RowingCoach

The clearest difference is rating: ErgData at 4.7 against RowingCoach's 3.3. ErgData also leads on in-app purchases (none vs 3) and ratings volume (5.1K vs 117). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. RowingCoach sells 3 one-off in-app purchases. ErgData asks for nothing beyond the download.

ErgData holds the better App Store score, 4.7 against 3.3. That said, the two scores are not equally well evidenced: ErgData has 5.1K ratings behind it against 117, so its average is the more settled of the two. Written reviews point the same way: 45% of ErgData's written reviews are positive against 38% of RowingCoach's.

ErgData ships an update every 2 weeks, RowingCoach every 2 months. The most recent releases landed on September 29, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | ErgData | RowingCoach |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (5.1K ratings)](https://appshunter.io/ios/app/ergdata/id561716382/reviews)** | [3.3 (117 ratings)](https://appshunter.io/ios/app/rowingcoach/id1202290980/reviews) |
| Number of ratings | **5.1K** | 117 |
| Positive reviews | **45.4% of reviews** | 38.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 74 MB | 9 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Concept2, Inc.](https://appshunter.io/developer/446481798) | [Gunther Cronenberg](https://appshunter.io/developer/1202290979) |

## What reviewers say

### ErgData

[App page](https://appshunter.io/ios/app/ergdata/id561716382)

This app acts as a personal training partner for Concept2 equipment. It allows users to set up custom workouts, view real-time stats, track progress, and sync data with online platforms. It also offers workout of the day challenges and detailed post-workout analysis.

**Highlights:** Custom workout setup, Real-time workout stats, Progress tracking, Sync with Concept2 Logbook, Workout of the Day, Post-workout analysis, Apple Watch compatibility

**Features:** Apple Watch app

**In-app purchases:** none

**What reviewers like**

- 🚀 Great app
- 👍 Excellent stats
- 👍 Easy to use
- 👍 Seamless sync with Concept2 logbook
- 👍 Customizable heart rate zones

**What reviewers complain about**

- 🐛 Connection issues with PM5
- 🐛 Unreliable heart rate monitoring
- 🐛 Sync issues with Apple Health
- 🐛 Crashes and data loss
- 🐛 Frequent disconnections

**Reported bugs**

- Workout data not saving
- Heart rate data freezing
- Disconnects during workouts
- Sync issues with Apple Health and Strava
- Login issues and frequent logouts

**Requested features**

- Add friend mode
- Integrate Apple Watch support
- Add manual workout entry
- Implement landscape mode for iPad
- Integrate pace calculator


### RowingCoach

[App page](https://appshunter.io/ios/app/rowingcoach/id1202290980)

Track your rowing sessions on land or water with detailed metrics like stroke rate, distance, pace, and calories burned. Use your iPhone or Apple Watch independently or together for flexible workout recording and progress analysis. Syncs with iCloud and Apple Health, and exports to popular fitness platforms.

**Highlights:** Track stroke rate, distance, pace, pulse, and calories, Use iPhone or Apple Watch for recording, Siri integration for workout control, Automatic stroke detection, Workout display on map, Export to Strava, TrainingPeaks, and more, iCloud synchronization

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unltd. recs & export (1 Month) | $0.99 | one-time |
| Unltd. recs & export (3 Months) | $1.99 | one-time |
| Unltd. recs & export (1 Year) | $4.99 | one-time |

**What reviewers like**

- ⌚ Excellent Apple Watch integration
- 🗺️ Accurate GPS tracking for on-water rowing
- ❤️ Heart rate monitoring functionality
- 📊 Comprehensive workout statistics and metrics
- 🔄 Seamless syncing with Apple Health

**What reviewers complain about**

- 🐛 Frequent crashes and freezes
- 📏 Inaccurate distance estimation (especially indoors)
- ⚠️ Strokes per minute (SPM) consistently underreported
- 🔋 Excessive battery drain on Apple Watch
- ❌ Data loss after pausing workouts

**Reported bugs**

- Distance resets to zero when workout is paused
- SPM not displaying in real-time during workouts
- App crashes when receiving phone calls
- GPS tracking stops working after iOS updates
- Stroke count significantly underreported (off by 30-50%)

**Requested features**

- Calibration settings for different rowing machines
- Automatic pause/resume detection
- Customizable workout countdown timers
- Bluetooth connectivity for Concept2 PM5
- Improved calorie burn calculations


## Frequently asked questions

### Is ErgData free?

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

### Is RowingCoach free?

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

### Which has better reviews, ErgData or RowingCoach?

ErgData is rated higher. ErgData averages 4.7 out of 5 from 5.1K ratings, while RowingCoach averages 3.3 from 117 ratings.

### Do ErgData or RowingCoach have ads?

Neither ErgData nor RowingCoach shows ads.

### Which is updated more often, ErgData or RowingCoach?

ErgData ships an update every 2 weeks, and RowingCoach every 2 months. Most recently, ErgData was updated on September 29, 2026 and RowingCoach on September 30, 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.*