# Rhythm SYNC. vs GymDJ Pro

The clearest difference is in-app purchases: Rhythm SYNC. at none against GymDJ Pro's 2. Rhythm SYNC. also leads on iOS requirement (12.0 vs 18.5). On price, ads and device support there is nothing between them.

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

## The numbers

| Metric | Rhythm SYNC. | GymDJ Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.8 (130 ratings)](https://appshunter.io/ios/app/rhythm-sync/id1226606963/reviews)** | — |
| Number of ratings | **130** | — |
| Positive reviews | 13.1% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Monetization | Free | — |
| Size | 47 MB | 14 MB |
| Requires iOS | **12.0** | 18.5 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Scosche](https://appshunter.io/developer/340018842) | [MR Digital Solutions](https://appshunter.io/developer/1833183501) |

## 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


### GymDJ Pro

[App page](https://appshunter.io/ios/app/gymdj-pro/id6752876295)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GymDJ Pro Monthly Subscription | $4.99 | per month |
| GymDJ Pro Yearly Subscription | $29.99 | per year |


## Frequently asked questions

### Is Rhythm SYNC. free?

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

### Is GymDJ Pro free?

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

### Do Rhythm SYNC. or GymDJ Pro have ads?

Neither Rhythm SYNC. nor GymDJ Pro 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.*