Tempus ECG-AF vs Zio XT ECG Monitoring System

Similar category, different focus. These tools serve overlapping but distinct needs. Comparability 65/100 Comparability is an AI-graded 0–100 score of how directly these two tools compete — higher means a more apples-to-apples comparison.
by Tempus AI, Inc.
VS
by iRhythm Technologies

AI Verdict

Tempus ECG-AF is an AI-based algorithm that analyzes existing 12-lead ECGs to predict the 12-month risk of new-onset atrial fibrillation in patients aged 65 or older. Conversely, the Zio XT ECG Monitoring System offers continuous, extended single-lead ECG monitoring via a wearable biosensor to detect and diagnose existing arrhythmias. While both utilize AI for cardiac analysis, Tempus focuses on future risk stratification from a snapshot, whereas Zio XT provides prolonged diagnostic monitoring for active arrhythmia detection.

Choose Tempus ECG-AF if…

Choose Tempus ECG-AF if your primary objective is to proactively identify older patients at increased risk of developing atrial fibrillation within the next 12 months. This tool is ideal for screening individuals aged 65 or older without pre-existing AF, leveraging standard 12-lead ECG recordings to support earlier risk stratification and potential follow-up.

View Tempus ECG-AF →

Choose Zio XT ECG Monitoring System if…

Choose Zio XT ECG Monitoring System if you need extended, continuous ambulatory cardiac monitoring for the diagnosis of existing or suspected arrhythmias. This wearable, single-lead biosensor is best suited for patients experiencing intermittent symptoms or those requiring comprehensive arrhythmia detection over a period of up to 14 days, offering high patient compliance and detailed data.

View Zio XT ECG Monitoring System →

Reviewed by Pouyan Golshani, MD — Interventional Radiologist

Quick Comparison

Feature Tempus ECG-AF Zio XT ECG Monitoring System
Pricing Contact vendor Contact for pricing
Deployment Software solution, integrated into healthcare facility systems with advanced cardiology algorithms. Cloud-based (AWS EC2 platform), no on-premise hardware required.
BAA Available Yes AI-estimated Yes AI-estimated
FDA Status Yes AI-estimated Yes AI-estimated
HIPAA Yes AI-estimated Yes 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 XT ECG Monitoring System

Tool B (Zio XT) offers superior patient usability with its wearable, wire-free, water-resistant biosensor for up to 14 days of continuous monitoring, leading to high patient compliance and satisfaction. In contrast, Tool A (Tempus ECG-AF) integrates into existing clinical workflows for 12-lead ECG analysis, which is clinician-centric rather than patient-centric in its primary usability focus.

Clinical Value

Zio XT ECG Monitoring System

While Tool A (Tempus ECG-AF) provides valuable predictive risk assessment for future AF from a single ECG, Tool B (Zio XT) offers comprehensive diagnostic value through continuous, long-term monitoring (up to 14 days) for a broader range of arrhythmias, combined with AI analysis and expert review. This continuous monitoring capability often leads to higher diagnostic yield for intermittent cardiac events that might be missed by a single ECG.

Pricing & Value

Zio XT ECG Monitoring System

Both tools require contacting the vendor for exact pricing, but Tool B (Zio XT) offers more transparent pricing information with a specific UK cost and a clear proposed US Medicare reimbursement range, albeit higher than Tool A's single Medicare rate. While Tool A's lower per-test reimbursement might be attractive for screening, Tool B's more comprehensive service (continuous monitoring, biosensor, analysis, reporting) and greater pricing transparency provide a clearer value proposition.

Enterprise Readiness

Zio XT ECG Monitoring System

Both tools are FDA-cleared, HIPAA compliant, and have BAAs, demonstrating strong regulatory and security readiness. However, Tool B's (Zio XT) cloud-based deployment (AWS EC2 platform) with no on-premise hardware required generally offers greater scalability, easier maintenance, and reduced IT burden for healthcare enterprises compared to Tool A's integration into existing facility systems.

Innovation

Tempus ECG-AF

Both tools leverage AI in cardiology, but Tool A (Tempus ECG-AF) stands out for its innovative predictive capability, identifying patients at increased risk of developing AF within 12 months from a standard 12-lead ECG. This proactive risk prediction from a readily available test represents a significant advancement in preventative care.

Support & Docs

Zio XT ECG Monitoring System

Based on web search, Tool B (Zio XT) offers more publicly accessible support resources and documentation for both patients and clinicians, including FAQs, instructional videos, and clear contact information. Tool A (Tempus ECG-AF) provides a support email and phone number but lacks the same level of readily available, structured public documentation for end-users.

Feature-by-Feature

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

Feature Tempus ECG-AF Zio XT ECG Monitoring System
Name Tempus ECG-AF Zio XT ECG Monitoring System
Company Tempus AI, Inc. iRhythm Technologies
Description FDA-cleared AI-based algorithm that analyzes 12-lead ECG recordings to identify patients aged 65 or older at increased risk of developing atrial fibrillation/flutter (AF) within the next 12 months, supporting earlier identification and follow-up. Wearable, single-lead ECG biosensor for up to 14 days of continuous cardiac monitoring, utilizing FDA-cleared AI and expert review for accurate arrhythmia detection and diagnosis.
Key Features AI-based algorithm for 12-lead ECG analysis; Detects signs associated with new onset Atrial Fibrillation (AF) within 12 months; Intended for patients 65 years or older without pre-existing AF, pacemakers, ICDs, or recent cardiac surgery; Results interpreted in conjunction with other diagnostic information and clinical history; Compatible with FDA authorized resting 12-lead ECGs from GE Medical Systems and Philips Medical Systems; Trained on over 1.5 million ECGs from over 500,000 patients Wearable single-lead ECG biosensor (Zio biosensor); Continuous ambulatory cardiac monitoring for up to 14 days; Water-resistant design for normal daily activities, including showering; No external leads or wires for enhanced patient comfort and reduced artifacts; Proprietary, FDA-cleared deep-learned AI algorithm for ECG data analysis; Cloud-based software platform (ZEUS) for data storage, analysis, and reporting; Patient-activated button for symptomatic event logging; High patient compliance (up to 99%) and satisfaction
Categories Cardiology AI Cardiology AI, Wearables & Remote Monitoring (RPM)

Videos

Demos, reviews, and walkthroughs featuring Tempus ECG-AF and Zio XT ECG Monitoring System.

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Frequently Asked Questions

Tempus ECG-AF is an AI-based algorithm that analyzes 12-lead ECGs to identify patients aged 65 or older at increased risk of developing atrial fibrillation/flutter (AF) within the next 12 months, supporting earlier identification and follow-up. In contrast, the Zio XT ECG Monitoring System offers continuous cardiac monitoring for up to 14 days using a wearable biosensor to detect and diagnose arrhythmias.
Tempus ECG-AF analyzes standard 12-lead ECG recordings and is compatible with FDA authorized resting 12-lead ECGs from GE Medical Systems and Philips Medical Systems. The Zio XT ECG Monitoring System uses a wearable, single-lead ECG biosensor for continuous ambulatory monitoring.
Tempus ECG-AF is specifically intended for patients 65 years or older without pre-existing AF, pacemakers, ICDs, or recent cardiac surgery. The Zio XT system is indicated for continuous ambulatory cardiac monitoring and can be used for symptomatic or asymptomatic patients, without specific age restrictions mentioned in the provided information.
Tempus ECG-AF has CMS reimbursement available under CPT 0764T and CPT 0765T, assigned to APC 5734, with a Medicare rate of $128.90, effective January 1, 2025. The Zio XT system is billed under CPT codes 93247 (greater than 7 days up to 15 days) and 93243 (greater than 48 hours up to 7 days), with proposed US Medicare rates of approximately $229-$260.35, and a UK cost of u00a3310 per patient.
Tempus ECG-AF utilizes an AI-based algorithm to analyze 12-lead ECGs for AF risk prediction. The Zio XT system employs a proprietary, FDA-cleared deep-learned AI algorithm for ECG data analysis, which is then overseen by accredited cardiac physiologists to generate a report.
Tempus ECG-AF is a software analysis of a standard ECG, so there is no ongoing patient interaction or device to wear. The Zio XT biosensor is a water-resistant wearable designed for up to 14 days of continuous monitoring, allowing for normal daily activities including showering, and features no external leads or wires for enhanced patient comfort.

Backers

Who funded each tool's parent company.

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