Rhythm SYNC.

Scosche Health & Fitness iPhoneiPod touch

Rhythm SYNC. is a free Health & Fitness app for iPhone and iPod touch by Scosche. Rated 1.8/5 from 130 ratings. Requires iOS 12.0. Updated December 30, 2025.

Rating: 1.8; 130 ratings
Price: Free; on the App Store
Size: 47 MB; Age 4+
Updated: Dec 30; 2025 · v2.21

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About Rhythm SYNC.

The award-winning Rhythm Heart Rate Monitors use patented technology to capture exceptionally accurate performance in both wet and dry conditions. This Scosche Rhythm Sync app: · Connects to Rhythm 24 and Rhythm+ Heart Rate Monitors · Manages Rhythm 24 activity modes and biometrics functionality: Heart Rate Only, Running, Cycling, Swimming, Heart Rate Variability, Duathlon, and Triathlon · Displays heart rate data from your Rhythm Monitors · Displays Rhythm battery level · Configures sharing with compatible heart rate tracking apps, fitness watches, bike computers, and fitness equipment, to stream your fitness-data in real time, track heart rate history, and more! · Collects Rhythm 24 recorded activities and has download capabilities · Allows for Rhythm Heart Rate Monitors software and firmware updates · HealthKit integration which allows you save workout data recorded on the sensor.

Ratings & reviews

1.8

130 ratings

5 ★ 14% 4 ★ 3% 3 ★ 2% 2 ★ 12% 1 ★ 70%

What’s new

Version 2.21 · Updated December 30, 2025

HRV Mode on the Rhythm+2.0 brings advanced performance insights to your training, letting you track your body’s stress, recovery, and readiness with clinical-level precision. By measuring the subtle variations between each heartbeat, it delivers a deeper understanding of how your body responds to workouts, sleep, and daily stress. It’s a powerful new layer of intelligence that turns the Rhythm+2.0 into more than a heart rate monitor—it’s your personal performance coach. Pair to your favorite HRV app while in HRV mode. Once firmware has been updated, activate HRV Mode with a triple button press and back to Heart rate mode with a triple button press.

App privacy

The developer, Scosche, reported these privacy practices to Apple.

Data Not Collected

The developer does not collect any data from this app.

App details

Rhythm SYNC. is a free Health & Fitness app for iPhone and iPod touch, developed by Scosche. It is rated 1.8 out of 5 from 130 ratings on the App Store, requires iOS 12.0 or later and is 47 MB to download. It was first released on April 25, 2018 and last updated on December 30, 2025.

Category: Health & Fitness
Rating: 1.8 / 5 (130 ratings)
Price: Free
Version: 2.21
Size: 47 MB
Requires: iOS 12.0 or later
Compatibility: iPhone, iPod touch
Languages: English
Age rating: 4+
Released: April 25, 2018
Last updated: December 30, 2025
Developer: Scosche

View on the App Store

Listing score

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Grade C

Average rating (1.8): Low. Many people skip apps under 4 stars.
1-star share (70%): Many 1-star ratings: look for a common complaint.
App name length (12 / 30): There’s room for a keyword after your brand, e.g. “Brand: What it does”.

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Alternatives to Rhythm SYNC.

Looking for apps like Rhythm SYNC.? Here are 6 similar apps on the App Store. The highest rated is Morpheus Training (4.9/5), and 5 of the 6 are free to download.

Rhythm SYNC. vs. alternatives
App	Rating	Price	Last updated	Compare
Rhythm SYNC.	1.8 / 5 (130 ratings)	Free	December 30, 2025
iCardio Workout Tracker	4.8 / 5 (3,366)	Free	Sep 29, 2026	Compare
Morpheus Training	4.9 / 5 (871)	Free	Sep 23, 2026	Compare
Elite HRV: Wellness & Fitness	4.7 / 5 (6,904)	Free	Nov 2, 2023	Compare
FITIV Pulse - Workout Tracker	4.6 / 5 (12,684)	Free	Oct 10, 2026	Compare
HRV4Training	3.6 / 5 (289)	9.99 USD	Sep 23, 2026	Compare
Kubios HRV - Daily Readiness	4.7 / 5 (193)	Free	Jun 22, 2026	Compare

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