# Rhythm SYNC. vs Morpheus Training

The clearest difference is rating: Morpheus Training at 4.9 against Rhythm SYNC.'s 1.8. Morpheus Training also leads on review sentiment (49% vs 13%) and update cadence (every 11 days vs every 3 months). Rhythm SYNC.'s advantage is monetization model (free vs free with in-app purchases) and iOS requirement (12.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Morpheus Training holds the better App Store score, 4.9 against 1.8. Both are backed by a comparable volume of ratings — 128 and 630 respectively. Written reviews point the same way: 13% of Rhythm SYNC.'s written reviews are positive against 49% of Morpheus Training's.

Rhythm SYNC. ships an update every 3 months, Morpheus Training every 11 days. The most recent releases landed on September 3, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Rhythm SYNC. | Morpheus Training |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.8 (128 ratings)](https://appshunter.io/ios/app/rhythm-sync/id1226606963/reviews) | **[4.9 (630 ratings)](https://appshunter.io/ios/app/morpheus-training/id1259741445/reviews)** |
| Number of ratings | 128 | **630** |
| Positive reviews | 13.1% of reviews | **48.8% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 11 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 47 MB | 71 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Scosche](https://appshunter.io/developer/340018842) | [Morpheus Labs INC](https://appshunter.io/developer/1259741444) |

## What reviewers say

### Rhythm SYNC.

[App page](https://appshunter.io/ios/app/rhythm-sync/id1226606963)

This app connects to heart rate monitors to display real-time data, manage activity modes, and track workout history. It allows for software updates and integrates with HealthKit for saving workout data.

**Highlights:** Connects to Rhythm 24 and Rhythm+ monitors, Manages activity modes and biometrics, Displays heart rate and battery level, Configures data sharing with other apps, Collects and downloads recorded activities, Performs software and firmware updates, HealthKit integration

**In-app purchases:** none

**What reviewers like**

- ✅ Accurate heart rate readings
- 🔋 Long-lasting device battery life
- 🔄 Reliable device hardware
- 📱 Simple and straightforward interface
- 🔗 Works well with third-party apps (Peloton, Garmin, Apple Watch)

**What reviewers complain about**

- 🐛 Frequent Bluetooth connection failures
- 🐛 App crashes and freezes regularly
- ❌ App doesn't recognize connected devices
- ⚠️ HRV mode difficult or impossible to access
- 📊 Extremely limited app functionality

**Reported bugs**

- App fails to detect device despite Bluetooth connection
- Bluetooth connection drops frequently during workouts
- App crashes on startup (splash screen freeze)
- Firmware update fails repeatedly
- HRV readings not displaying or accessible

**Requested features**

- HRV (Heart Rate Variability) mode that actually works
- Comprehensive workout history and logging
- Data export to multiple health apps (MyFitnessPal, TrainingPeaks, etc.)
- Customizable heart rate zones that persist
- Batch download and export of multiple files


### Morpheus Training

[App page](https://appshunter.io/ios/app/morpheus-training/id1259741445)

This app optimizes cardio training and recovery by providing personalized heart rate zones and weekly targets. It uses HRV data to guide intensity and volume, helping users improve fitness and conditioning with zone-based interval training.

**Highlights:** Personalized heart rate zones, CardioSmart features, Zone-based interval training (ZBIT), Weekly heart rate zone targets, Daily recovery score, Integrates with wearables and Apple Health Kit

**In-app purchases:** none


## Frequently asked questions

### Is Rhythm SYNC. free?

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

### Is Morpheus Training free?

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

### Which has better reviews, Rhythm SYNC. or Morpheus Training?

Morpheus Training is rated higher. Rhythm SYNC. averages 1.8 out of 5 from 128 ratings, while Morpheus Training averages 4.9 from 630 ratings.

### Do Rhythm SYNC. or Morpheus Training have ads?

Neither Rhythm SYNC. nor Morpheus Training shows ads.

### Which is updated more often, Rhythm SYNC. or Morpheus Training?

Rhythm SYNC. ships an update every 3 months, and Morpheus Training every 11 days. Most recently, Rhythm SYNC. was updated on September 3, 2026 and Morpheus Training on September 25, 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.*