Rhythm SYNC.

Name: Rhythm SYNC.
Rating: 1.8 (130 reviews)
Author: Scosche

By: Scosche App

Health & Fitness

Overview

Version:

2.21

Last updated: 2025-12-30

Ranking

#196,821 ▼ 5,700

Overall

Features & Capabilities

Rhythm SYNC is a Chrome extension that pairs with Rhythm 24 and Rhythm+ heart rate monitors to display real-time heart rate data and battery status directly in your browser.

It offers activity-mode management (Heart Rate Only, Running, Cycling, Swimming, HRV, Duathlon, Triathlon), supports firmware updates, downloads Rhythm 24 activities, and enables sharing with fitness apps and devices. HealthKit integration lets you save workout data from sensors for later analysis.

User Growth & Download Statistics

App Sports Data

By:

Scosche

Rating:

1.80

(130)

Version:

2.21 Last updated: 2025-12-30

Version code:

881075992

Creation date:

2018-04-25

Compatible devices:

Size:

47.45MB

URLs:

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-07-19

Compare stats and ranking:

Ranking

# 196,821 ▼ 5,700

Other platforms

Rhythm SYNC (v1.37)

46,049 1.64

(335)

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

Scosche

Apple Apps Store

https://apps.apple.com/us/app/rhythm-sync/id1226606963

User Reviews

User reviews coalesce around a fragile Rhythm SYNC app plagued by pairing and connectivity failures, frequent crashes, and a UI that feels unfinished. Many users find the app only partially useful for basic HR and battery checks, with HRV, HR zones, and data sharing poorly supported or malfunctioning. Maintenance appears inconsistent, with some reports of incompatibility or no updates. A minority praise the app’s simplicity and quick pairing when it works, but the overall sentiment is that reliability and feature completeness are lacking.

Pros

Simple, straightforward app with minimal friction and no sign-in required.
Provides essential data like current heart rate, battery level, and firmware updates.
Lightweight and quick to pair when it does connect.

Cons

Frequent pairing and Bluetooth connectivity issues; devices won’t pair, disconnect often, and show 'No monitors available.'
App crashes, freezes, and is unresponsive; many features don’t work and the UI feels buggy.
Limited functionality; HRV support is unreliable in practice, HR zones are buggy, and key features (e.g., My Details) don’t work well or at all.
Poor maintenance/compatibility; reports of the app no longer working with Scosche products as of 2024 and lack of updates.
Troubleshooting/help is ineffective; users report a dysfunctional help menu and little guidance.

Recent reviews

I really appreciate this app. I use other apps to keep track of my workout data. This app does exactly what I wanted it to do: I can see my battery level and it immediately updated the device’s firmware flawlessly. Thank you!