# HRV4Training vs Compex Coach

The clearest difference is price: Compex Coach at Free against HRV4Training's $9.99. Compex Coach also leads on rating (4.7 vs 3.6) and iOS requirement (12.0 vs 15.6). HRV4Training's advantage is chart position (#30 vs unranked). On review sentiment, ratings volume, update cadence and ads there is nothing between them.

Compex Coach is free to download; HRV4Training costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Compex Coach holds the better App Store score, 4.7 against 3.6. Both are backed by a comparable volume of ratings — 290 and 309 respectively. Written reviews complicate that: 61% of HRV4Training's written reviews are positive against 57% of Compex Coach's, so the app with the better star average is not the one people write more warmly about.

HRV4Training ships an update every 6 weeks, Compex Coach every 3 months. The most recent releases landed on November 1, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | HRV4Training | Compex Coach |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | [3.6 (290 ratings)](https://appshunter.io/ios/app/hrv4training/id686923970/reviews) | **[4.7 (309 ratings)](https://appshunter.io/ios/app/compex-coach/id1434658426/reviews)** |
| Number of ratings | 290 | **309** |
| Positive reviews | **60.9% of reviews** | 57.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Monetization | Paid | **Free** |
| Best chart rank | **#30** | — |
| Size | 35 MB | 73 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [A.S.M.A. B.V.](https://appshunter.io/developer/1066843463) | [DJO, LLC](https://appshunter.io/developer/472386862) |

## What reviewers say

### HRV4Training

[App page](https://appshunter.io/ios/app/hrv4training/id686923970)

**Currently charting:** #30 Top Paid · Health & Fitness (US App Store)

Quantify stress, balance training and lifestyle, and improve performance with scientifically validated heart rate variability insights. This app accurately assesses HRV using your phone's camera or compatible devices, offering actionable interpretations for optimizing your training plan.

**Highlights:** HRV-based stress quantification, Training and lifestyle balance, Performance improvement insights, Camera-based HRV assessment, Integration with wearables, Training load analysis, VO2max and Lactate Threshold estimation

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Accurate HRV measurements
- 🚀 Straightforward and easy to use
- 💡 Provides valuable insights for training and recovery
- 👍 Integrates well with other fitness apps
- 👍 Responsive and helpful developer support

**What reviewers complain about**

- 🐛 Inconsistent readings and technical issues
- 🔒 Requires user account and data sharing
- 🔒 Concerns about data privacy
- 🔋 Drains battery when using camera for measurements

**Reported bugs**

- App crashes frequently, especially with iOS updates
- Syncing issues with Strava, TrainingPeaks, and Apple Health
- Camera-based measurements often unreliable or inconsistent

**Requested features**

- Allow multiple measurements per day
- Improve integration with Apple Watch and other wearables
- Add more customization options and data visualization
- Expand support for non-athletic use cases


### Compex Coach

[App page](https://appshunter.io/ios/app/compex-coach/id1434658426)

This app guides users in setting training objectives, planning sessions, and receiving reminders for their Compex device. It offers detailed instructions on electrode placement, intensity management, and program specifics for various fitness and recovery goals. Users can also share their progress with friends.

**Highlights:** Set training objectives, Plan Compex sessions, Reminders for sessions, Electrode placement guidance, Program details and explanations, Share sessions with friends

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Helpful for electrode placement
- 📈 Good for tracking progress (Workload Score)
- 💪 Aids in bodybuilding and cycling
- ✨ Helps firm/shape body areas
- 💡 Useful for logging past settings

**What reviewers complain about**

- ❓ Poor or vague instructions
- 🤔 Lacks detailed exercise routines/videos
- 🚫 No shipping service/slow processing
- ✉️ No response to emails
- 🔠 Limited electrode placement options

**Reported bugs**

- 🐛 Won't let add multiple muscle groups on different programs

**Requested features**

- More comprehensive electrode placement map
- More detailed instructions and exercise examples
- Video demonstrations of exercises and calibration
- Ability to rearrange missed sessions in the app
- Synchronize functionality between the app and online coach


## Frequently asked questions

### Is HRV4Training free?

HRV4Training costs $9.99, with no in-app purchases.

### Is Compex Coach free?

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

### Which has better reviews, HRV4Training or Compex Coach?

Compex Coach is rated higher. HRV4Training averages 3.6 out of 5 from 290 ratings, while Compex Coach averages 4.7 from 309 ratings.

### Do HRV4Training or Compex Coach have ads?

Neither HRV4Training nor Compex Coach shows ads.

### Which is updated more often, HRV4Training or Compex Coach?

HRV4Training ships an update every 6 weeks, and Compex Coach every 3 months. Most recently, HRV4Training was updated on November 1, 2026 and Compex Coach on October 29, 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.*