Rhythm SYNC. vs HRV Tracker Minimal
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Rhythm SYNC.
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.
- 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
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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.
HRV Tracker Minimal
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HRV Tracker Minimal is a simple Apple Watch app for viewing your heart rate variability (HRV). Key Features • View your latest HRV • Check today’s average • See today’s HRV trends in a line chart • Browse measurements with their recorded times • Add widgets to your watch face • View your latest HRV and today’s trend as a line chart in the rectangular modular widget HRV data is read from Apple Health and is not transmitted to or stored on external servers. This app is not intended for diagnosis or medical decision-making. Consult a qualified healthcare professional when necessary. Privacy Policy: https://ayhk.notion.site/393a9aeefe77806ba626e04c116965ec
Screenshots
Verdict
The clearest difference is price: Rhythm SYNC. at Free against HRV Tracker Minimal's $0.99. HRV Tracker Minimal's advantage is update cadence (every 9 days vs every 3 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Rhythm SYNC. is free to download; HRV Tracker Minimal costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Rhythm SYNC. ships an update every 3 months, HRV Tracker Minimal every 9 days. The most recent releases landed on October 17, 2026 and October 16, 2026 respectively.
| Parameter | Rhythm SYNC. | HRV Tracker Minimal |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 1.8 (128 ratings) — better | — |
| Positive reviews | 13.1% of reviews | — |
| Number of ratings | 128 — better | — |
| Update frequency | Every 3 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod, Apple Watch — better |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 47 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Scosche | Kunihiko Ayuha |
Bugs and requests
Rhythm SYNC.
Reported bugs
17 issues- 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
Show 12 moreShow fewer
- Custom heart rate zones not applied to recordings
- Battery level shows as zero or incorrect
- Settings menu items non-functional or unresponsive
- App loses connection when device syncs with other apps
- Data disappears when monitor disconnects
- Export to CSV ignores custom zones
- App crashes when attempting to share workout data
- Last mode setting not remembered between sessions
- Unable to modify personal details (height, weight, birthday)
- Incompatibility with iPhone X and newer models
- Firmware update window won't open
- App incompatible with iOS 11 and newer versions
Requested features
12 requests- 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
Show 7 moreShow fewer
- Auto-sync feature when device is detected
- Detailed analytics and charts
- Better user profile settings (height, weight, age)
- Dark mode option
- Improved troubleshooting and help documentation
- Ability to delete saved connections to health apps
- Support for multiple languages in documentation
HRV Tracker Minimal
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Rhythm SYNC.
No in-app purchases
HRV Tracker Minimal
No in-app purchases
Questions
Is Rhythm SYNC. free?
Is HRV Tracker Minimal free?
Do Rhythm SYNC. or HRV Tracker Minimal have ads?
Which is updated more often, Rhythm SYNC. or HRV Tracker Minimal?
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