RX-1 Rhythm Express Remote Cardiac Monitoring System vs Zio AT ECG Monitoring System

Direct competitors — feature-level head-to-head below. Comparability 92/100 Comparability is an AI-graded 0–100 score of how directly these two tools compete — higher means a more apples-to-apples comparison.
VS
by iRhythm Technologies, Inc.

AI Verdict

Both the RX-1 Rhythm Express and Zio AT ECG Monitoring Systems are direct competitors, offering FDA-cleared, AI-powered wearable ECG monitoring for arrhythmia detection in cardiology. The RX-1 provides multiple monitoring modes (MCT, Event, Holter) and detailed pricing structures, while the Zio AT offers a longer continuous recording duration of up to 14 days and a dedicated patient app for symptom logging.

Choose RX-1 Rhythm Express Remote Cardiac Monitoring System if…

Choose the RX-1 Rhythm Express if your primary concern is achieving exceptionally clean ECG signals, even in challenging environments, due to its proprietary MDSP™ technology for superior noise suppression. This system is also ideal when you need the flexibility to switch between Mobile Cardiac Telemetry, Event, and Holter monitoring modes with a single device, offering versatile diagnostic capabilities for various patient needs.

View RX-1 Rhythm Express Remote Cardiac Monitoring System →

Choose Zio AT ECG Monitoring System if…

Choose the Zio AT ECG Monitoring System if you require extended continuous monitoring for up to 14 days to maximize the chances of capturing infrequent or paroxysmal arrhythmias. This system is particularly well-suited for clinicians who value a comprehensive, AI-powered end-of-wear report and a robust ecosystem of clinician and patient mobile applications for streamlined management and patient engagement.

View Zio AT ECG Monitoring System →

For physicians evaluating remote cardiac monitoring solutions, the RX-1 Rhythm Express and Zio AT systems offer distinct advantages. The RX-1 Rhythm Express, with its proprietary MDSP™ technology, excels in noise suppression and offers flexible monitoring modes (MCT, Event, Holter), making it ideal for practices prioritizing superior signal quality and adaptable monitoring durations. Its near real-time data transmission to a cloud platform allows for prompt physician review, and its varied pricing models (subscription, fee-for-service, split-bill) provide financial flexibility.

The Zio AT ECG Monitoring System, on the other hand, is distinguished by its FDA-cleared deep-learned AI algorithm (ZEUS System) for arrhythmia detection and its capability for continuous, uninterrupted ECG recording for up to 14 days. This makes it particularly well-suited for long-term arrhythmia detection and comprehensive reporting, especially when extended monitoring periods are clinically indicated. The key practical difference lies in RX-1’s emphasis on signal processing and multi-mode flexibility versus Zio AT’s focus on extended, continuous monitoring with advanced AI analysis for comprehensive long-term insights.

Ultimately, physicians prioritizing advanced noise suppression, flexible monitoring modes, and diverse billing options may lean towards the RX-1 Rhythm Express. Conversely, those requiring extended, continuous monitoring with a robust, deep-learned AI for comprehensive long-term arrhythmia detection and reporting would find the Zio AT system to be a more fitting choice.

Reviewed by Pouyan Golshani, MD — Interventional Radiologist

Quick Comparison

Feature RX-1 Rhythm Express Remote Cardiac Monitoring System Zio AT ECG Monitoring System
Pricing Available via subscription, fee-for-service, or split-bill models. Contact for pricing
Deployment Wearable device for patients, cloud-based platform for data management and review. Cloud-based (data analytics and clinician portal)
FDA Status 1 AI-estimated 1 AI-estimated

Head-to-Head

AI-generated assessment across six dimensions based on each tool's documented features and compliance posture. Grounded in public data — not a substitute for hands-on evaluation.

Usability

Zio AT ECG Monitoring System

Zio AT offers a significantly longer continuous wear time of up to 14 days compared to RX-1's 5 days, enhancing patient convenience and reducing the need for device changes. Additionally, Zio AT explicitly provides dedicated mobile applications for both clinicians (ZioSuite) and patients (MyZio) for comprehensive management and education, suggesting a more integrated and user-friendly digital experience. While RX-1 offers multiple monitoring modes, Zio AT's longer wear time and app ecosystem provide a stronger overall usability advantage for both patients and providers.

Clinical Value

Zio AT ECG Monitoring System

Zio AT's ability to provide continuous, uninterrupted ECG recording for up to 14 days offers a significant clinical advantage for detecting intermittent and elusive arrhythmias over a longer period. This extended monitoring duration, combined with its FDA-cleared deep-learned AI algorithm (ZEUS System) and comprehensive end-of-wear reports, provides a more complete diagnostic picture. While RX-1's MDSPu2122 technology for noise suppression is valuable for signal quality, the longer duration of monitoring often yields greater clinical insights for conditions requiring extended observation.

Pricing & Value

RX-1 Rhythm Express Remote Cardiac Monitoring System

RX-1 clearly wins in this dimension due to its transparent and flexible pricing models, including subscription, fee-for-service, and split-bill options. This transparency allows healthcare providers to better understand and manage costs, aligning with various operational and billing preferences. In contrast, Zio AT's pricing is not publicly disclosed, making it difficult for potential customers to assess its value proposition without direct inquiry.

Enterprise Readiness

Tie

Both tools demonstrate strong enterprise readiness by being FDA-cleared, HIPAA compliant, and offering Business Associate Agreements (BAA), which are crucial for healthcare deployments. Both also utilize cloud-based platforms for data management and clinician access. While Zio AT explicitly highlights its 'ZioSuiteu00ae clinician portal and mobile app', RX-1's built-in cellular connectivity for near real-time data transmission also provides a strong foundation for reliable enterprise data flow.

Innovation

RX-1 Rhythm Express Remote Cardiac Monitoring System

RX-1 demonstrates significant innovation through its proprietary Multi-Domain Signal Processing (MDSPu2122) technology, which specifically addresses noise suppression to enhance signal quality, a fundamental challenge in ECG monitoring. Furthermore, its ability to operate in multiple modes (MCT, Event, Holter) within a single device offers advanced flexibility and utility. While Zio AT's deep-learned AI and extended wear time are innovative, RX-1's unique signal processing and multi-mode functionality provide a distinct technological edge.

Support & Docs

Zio AT ECG Monitoring System

Both companies offer robust 24/7 support channels for patients and providers, including phone and email. Zio AT, however, provides a slightly more comprehensive and integrated support ecosystem by explicitly offering dedicated mobile applications for both patients (MyZio) and clinicians (ZioSuite), which serve as accessible resources for education, symptom logging, and management. These apps, combined with FAQs and a clinical reference manual, offer a well-rounded and easily accessible support experience.

Feature-by-Feature

Detail beyond the Quick Comparison summary. For pricing, deployment, BAA, FDA, and HIPAA see the Overview tab.

Feature RX-1 Rhythm Express Remote Cardiac Monitoring System Zio AT ECG Monitoring System
Device Name RX-1 Rhythm Express Remote Cardiac Monitoring System Zio AT ECG Monitoring System
Company VivaQuant iRhythm Technologies, Inc.
Monitoring Modes Mobile Cardiac Telemetry (MCT), Event Recorder (ER), and Wireless Holter (WH) modes Mobile cardiac telemetry (MCT) service
Key Arrhythmia Detection Technology Proprietary Multi-Domain Signal Processing (MDSPu2122) technology for noise suppression, AI-enabled advanced signal processing for arrhythmia detection FDA-cleared deep-learned AI algorithm (ZEUS System) for arrhythmia detection
Max Continuous Monitoring Duration Up to 5 days (battery life on a single charge) Up to 14 days

Videos

Demos, reviews, and walkthroughs featuring RX-1 Rhythm Express Remote Cardiac Monitoring System and Zio AT ECG Monitoring System.

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Frequently Asked Questions

The RX-1 Rhythm Express Remote Cardiac Monitoring System offers Mobile Cardiac Telemetry (MCT), Event Recorder (ER), and Wireless Holter (WH) modes. The Zio AT ECG Monitoring System provides continuous mobile cardiac telemetry (MCT) service.
The RX-1 Rhythm Express system has an extended battery life, allowing for up to 5 days of continuous monitoring on a single charge. The Zio AT ECG Monitoring System is designed for continuous, uninterrupted ECG recording for up to 14 days.
The RX-1 Rhythm Express uses built-in cellular connectivity for near real-time data transmission to a cloud platform for physician review. The Zio AT system utilizes a wireless gateway for real-time data transmission and provides a ZioSuiteu00ae clinician portal and mobile app for report interpretation and patient management.
The RX-1 Rhythm Express utilizes proprietary Multi-Domain Signal Processing (MDSPu2122) technology for superior noise suppression and AI-enabled advanced signal processing for arrhythmia detection. The Zio AT system features an FDA-cleared deep-learned AI algorithm known as the ZEUS System for arrhythmia detection.
The RX-1 Rhythm Express provides a cloud-based platform for data management and physician review. The Zio AT system includes the ZioSuiteu00ae clinician portal and mobile app for clinician management and report interpretation, along with the MyZiou00ae patient mobile app for symptom logging and education.

Backers

Who funded each tool's parent company.

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