Tempus ECG-AF vs Zio AT 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, Inc.

AI Verdict

Tempus ECG-AF is designed for predictive risk assessment, identifying patients at increased risk of developing atrial fibrillation within the next 12 months based on a single 12-lead ECG. In contrast, the Zio AT ECG Monitoring System provides continuous, long-term monitoring via a wearable patch to detect existing symptomatic and asymptomatic cardiac arrhythmias. While both leverage AI for ECG analysis in cardiology, they address different clinical needs: future risk stratification versus ongoing diagnostic event detection.

Choose Tempus ECG-AF if…

Choose Tempus ECG-AF if you need to proactively identify elderly patients (65+) at an increased risk of developing new-onset atrial fibrillation within the next year, based on a single 12-lead ECG. This tool is ideal for risk stratification in a primary care or cardiology setting to guide earlier follow-up and preventative strategies for eligible patients without a prior AF diagnosis.

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Choose Zio AT ECG Monitoring System if…

Choose the Zio AT ECG Monitoring System if you require continuous, long-term monitoring (up to 14 days) to detect existing or intermittent arrhythmias, both symptomatic and asymptomatic. This wearable solution is best suited for diagnosing elusive cardiac events that may not be captured during a standard ECG, providing comprehensive data for definitive arrhythmia diagnosis and management.

View Zio AT ECG Monitoring System →

Reviewed by Pouyan Golshani, MD — Interventional Radiologist

Quick Comparison

Feature Tempus ECG-AF Zio AT ECG Monitoring System
Pricing Contact vendor Contact for pricing
Deployment Software solution, integrated into healthcare facility systems with advanced cardiology algorithms. Cloud-based (data analytics and clinician portal)
BAA Available Yes AI-estimated Yes AI-estimated
FDA Status Yes AI-estimated Cleared 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 AT ECG Monitoring System

Tool B, the Zio AT ECG Monitoring System, offers a comprehensive user experience with a wearable patch for patients, a wireless gateway for data transmission, and dedicated clinician and patient mobile applications. This end-to-end system provides convenience for continuous, remote monitoring and patient engagement. Tool A, Tempus ECG-AF, integrates into existing healthcare facility systems, which is beneficial for clinicians but lacks the direct patient-facing components and remote monitoring capabilities of Tool B.

Clinical Value

Tie

Both tools offer significant clinical value, albeit in different aspects. Tempus ECG-AF provides predictive value by identifying patients at increased risk of developing AF within 12 months from a standard 12-lead ECG, enabling proactive intervention. Zio AT ECG Monitoring System offers diagnostic value through continuous, long-term monitoring for up to 14 days, detecting both symptomatic and asymptomatic arrhythmias. The choice of which provides 'more' value depends on the specific clinical need: risk stratification versus active arrhythmia detection.

Pricing & Value

Tempus ECG-AF

While both tools require direct vendor contact for specific pricing, Tempus ECG-AF provides clear information regarding CMS reimbursement, including specific CPT codes and a Medicare rate. This transparency offers a more predictable financial pathway for healthcare providers. Tool B's pricing details are less transparent, only stating that it typically involves service fees for monitoring and analysis.

Enterprise Readiness

Tie

Both Tempus AI and iRhythm Technologies are established companies with FDA clearance, HIPAA compliance, and Business Associate Agreements (BAAs), indicating strong enterprise readiness. Tool A integrates into existing healthcare facility systems, which can streamline adoption within current IT infrastructure. Tool B's cloud-based deployment with a clinician portal offers scalability and remote access, also a key feature for enterprise environments. Both are well-equipped for large-scale deployment.

Innovation

Tempus ECG-AF

Tempus ECG-AF demonstrates a higher degree of innovation by leveraging AI to extract predictive insights for future AF risk from a single, standard 12-lead ECG, a widely available diagnostic test. This predictive capability represents a novel application of AI in cardiology. While Tool B's continuous wearable monitoring with deep-learned AI is advanced, it builds upon existing mobile cardiac telemetry concepts, whereas Tool A offers a new paradigm for risk stratification.

Support & Docs

Zio AT ECG Monitoring System

Tool B, the Zio AT ECG Monitoring System, explicitly mentions a 'ZioSuiteu00ae clinician portal and mobile app for patient management and report interpretation' and a 'MyZiou00ae patient mobile app for symptom logging and education.' These integrated digital resources suggest a comprehensive ecosystem for user support and documentation. Tool A's information does not detail similar dedicated portals or apps for support and documentation, implying reliance on standard integration and vendor contact.

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 AT ECG Monitoring System
Tool Name Tempus ECG-AF Zio AT ECG Monitoring System
Company Tempus AI, Inc. iRhythm Technologies, Inc.
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. FDA-cleared, wearable mobile cardiac telemetry (MCT) service offering continuous, AI-powered ECG monitoring for long-term arrhythmia detection and comprehensive reporting.
Key Feature 1 AI-based algorithm for 12-lead ECG analysis Wearable Zio AT patch for continuous ECG recording
Key Feature 2 Detects signs associated with new onset Atrial Fibrillation (AF) within 12 months Wireless gateway for real-time data transmission
Key Feature 3 Intended for patients 65 years or older without pre-existing AF, pacemakers, ICDs, or recent cardiac surgery FDA-cleared deep-learned AI algorithm (ZEUS System) for arrhythmia detection

Videos

Demos, reviews, and walkthroughs featuring Tempus ECG-AF and Zio AT 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. The Zio AT ECG Monitoring System offers continuous, AI-powered ECG monitoring for long-term arrhythmia detection and comprehensive reporting of symptomatic and asymptomatic cardiac events.
Tempus ECG-AF analyzes existing 12-lead ECG recordings collected at a healthcare facility, specifically compatible with FDA-authorized resting 12-lead ECGs from GE Medical Systems and Philips Medical Systems. In contrast, the Zio AT system uses a wearable Zio AT patch for continuous, uninterrupted ECG recording for up to 14 days, with real-time data transmission via a wireless gateway.
Tempus ECG-AF is intended for patients aged 65 or older who do not have a known history of AF, pacemakers, ICDs, or recent cardiac surgery. The Zio AT ECG Monitoring System is designed for long-term arrhythmia detection in a broader patient population, detecting both symptomatic and asymptomatic cardiac events.
Tempus ECG-AF has established CMS reimbursement available, with CPT codes 0764T and 0765T assigned to APC 5734, and a Medicare rate of $128.90, effective January 1, 2025. For the Zio AT system, pricing details are not publicly disclosed, but it typically involves service fees for monitoring and analysis, and is billed under CPT codes like 93229 and 93228 for mobile cardiac telemetry, or 93243 and 93247 for extended continuous ambulatory cardiac monitoring.
Tempus ECG-AF provides an AI-based analysis of a 12-lead ECG, categorizing patients into 'increased risk' or 'no increased risk' of developing AF within the next 12 months. The Zio AT system generates comprehensive end-of-wear reports for clinicians, detailing detected symptomatic and asymptomatic cardiac events from continuous monitoring.

Backers

Who funded each tool's parent company.

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