ECGsource vs STEMIcathAID
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ECGsource
This medical education app provides a searchable reference for ECG diagnoses and criteria, sample ECG images, and video tutorials. It's designed for medical students and professionals to aid in electrocardiogram interpretation and board review.
- Searchable ECG diagnoses and criteria
- High-resolution sample ECG images
- ECG quiz (demo)
- Video tutorials for beginners
- Board review preparation
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**Excellent resource for ECG Criteria and Board Review!** ECGsource (from the developers of the CathSource and EchoSource Apps) is a supplemental application to ECGsource.com, the largest online educational resource for electrocardiograms. ECGsource has been developed for medical education and board review, and assists institutions in documenting trainee competency in electrocardiogram (ECG) interpretation. ECGsource for the iPhone/iPad provides the following resources: -> Full-List of Searchable ECG Diagnoses and Criteria -> Over 65 High-Resolution Sample ECG Images -> ECG Quiz (5-question demo of website's full content) -> ECG Video Tutorials for Beginners (over 50 minutes of tutorial videos) **ECG Criteria is an easily searchable rapid reference for more than 90 of the most common ECG diagnoses, including: Normal ECG, Incorrect Electrode Placement, Artifact, Atrial Enlargement, Sinus Rhythm, Sinus Arrhythmia, Bradycardia, Tachycardia, Sinus Arrest, Sinoatrial Exit Block, Atrial Premature Complexes, Atrial Tachycardia, Multifocal Atrial Tachycardia, Supraventricular Tachycardia, Atrial Flutter, Atrial Fibrillation, AV Junctional Rhythm/Tachycardia, Ventricular Premature Complexes, Ventricular Tachycardia, Accelerated Idioventricular Rhythm, Ventricular Fibrillation, AV Block, (1st Degree, 2nd Degree, and 3rd Degree), Wolff-Parkinson-White, AV Dissociation, Low Voltage, Axis Deviation, Electrical Alternans, Ventricular Hypertrophy, Complete and Incomplete Right Bundle Branch Block, Left Anterior Fascicular Block, Left Posterior Fascicular Block, Complete and Incomplete Left Bundle Branch Block, Non-specific Intraventricular Conduction Disturbance, Functional (Rate-Related) Aberrancy, Anterolateral Infarction (Age Recent or Probably Acute), Anterolateral Infarction (Age Indeterminate or Probably Old), Anterior or Anteroseptal Infarction (Age Recent or Probably Acute), Anterior or Anteroseptal Infarction (Age Indeterminate or Probably Old), Lateral Infarction (Age Recent or Probably Acute), Lateral Infarction (Age Indeterminate or Probably Old), Inferior Infarction (Age Recent or Probably Acute), Inferior Infarction (Age Indeterminate or Probably Old), Posterior Infarction (Age Recent or Probably Acute), Posterior Infarction (Age Indeterminate or Probably Old), Early Repolarization, Juvenile T Waves, Nonspecific ST and/or T Wave Abnormalities, ST and/or T Wave Abnormalities Suggesting Myocardial Ischemia, ST and/or T Wave Abnormalities Suggesting Myocardial Injury, ST and/or T Wave Abnormalities Suggesting Electrolyte Disturbances, ST and/or T wave Abnormalities Secondary to Hypertrophy, Prolonged Q-T Interval, Prominent U Waves, Digitalis Effect, Hyperkalemia, Hypokalemia, Hypercalcemia, Hypocalcemia, Secundum Atrial Septal Defect, Primum Atrial Septal Defect, Dextrocardia, Chronic Lung Disease, Acute Cor Pulmonale Including Pulmonary Embolism, Pericardial Effusion, Acute Pericarditis, Hypertrophic Cardiomyopathy, Central Nervous System Disorder, Myxedema, Hypothermia, Sick Sinus Syndrome, Brugada Syndrome, Ebstein's Anomaly, Atrial or Coronary Sinus Pacing, Ventricular Demand Pacemaker (VVI), Dual Chamber Pacemaker (DDD), and Pacemaker Malfunction.** **ECG Video Tutorial section includes over 50 minutes of video tutorials designed to assist beginners learning electrocardiogram interpretation. Tutorial topics include Understanding the Cardiac Conduction System, Understanding the Limb and Precordial Leads, Determining ECG Rate and Axis, Left Ventricular Hypertrophy, Bundle Branch Blocks, and ST-Segment Elevation.** Visit us online at ECGsource.com for more information.
STEMIcathAID
This medical app streamlines STEMI treatment by optimizing patient recognition, response, and record-keeping. It enhances communication and coordination among healthcare providers, reducing critical time to reperfusion for high-risk patients. Features include EKG upload, cardiogenic shock assessment, and live GPS tracking.
- EKG upload via smartphone
- Cardiogenic shock assessment
- STEMI patient transfer pathway
- Live GPS tracking of EMS
- HIPAA compliant encrypted collaboration
- Notification system for cath lab preparation
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STEMIcathAID is a patient recognition, response, and record-keeping system designed to improve outcomes through adherence the American Heart Association’s Mission:Lifeline STEMI guidelines. Early restoration of blood flow to occluded coronary vessels has been shown to significantly improve outcomes for high-risk STEMI patients. STEMIcathAID aims to improve these clinical outcomes by optimizing their treatment following many of the recommendations of the AHA by reducing the time to STEMI recognition, lead acquisition, STEMI identification, notification of the catheterization lab, and reperfusion. There are multiple personnel and steps involved in caring for these high-risk patients. STEMIcathAID takes an algorithmic approach which will enhance the coordination and communication tasks essential to rapid assessment and easy transfer of STEMI patients from the field or outside facility. It will also provide protocols for the EMS or outside hospital provider to identify patients in cardiogenic shock even before their arrival in the catheterization lab. The application will integrate live GPS tracking of the patients alongside the time the alarm was raised prompting the sense of urgency in transferring the patient. Incorporating images, videos, illustrations, and live GPS tracking of the EMS, the design will be subdivided into three main sections: 1. EKG Upload by outside facility or EMS 2. Assessment of Cardiogenic Shock 3. STEMI patient transfer pathway When a medical provider, in the field, other hospital, or outpatient office, suspects STEMI, the provider uploads the EKG by taking a picture of it with their phone. Once the EKG is uploaded, the on-call attending at the PCI-capable facility receives a notification from the application. If the attending believes the patient is experiencing a real STEMI, the pathway is activated. Upon activation, the approximately 10-12 people involved in taking care of the patient are notified so they can begin preparations. Adhering to HIPAA compliance, all users log into the encrypted application and begin to collaborate such aspects as patient vitals, shock information, and emergency vehicle current location and estimated arrival time to the cath lab. Through the optimized communication and collaboration of multiple key players in the STEMI pathway, these time-critical, vulnerable patients can begin treatment promptly.
Screenshots
Verdict
The clearest difference is price: STEMIcathAID at Free against ECGsource's $0.99. STEMIcathAID also leads on rating (3.3 vs 3.0). ECGsource's advantage is chart position (#42 vs unranked) and iOS requirement (9.0 vs 15.1). On ratings volume, update cadence, ads and in-app purchases 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
STEMIcathAID is free to download; ECGsource costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
STEMIcathAID holds the better App Store score, 3.3 against 3.0. Both are backed by a comparable volume of ratings — 8 and 8 respectively.
ECGsource ships an update every 4 months, STEMIcathAID every 3 months. The most recent releases landed on September 21, 2026 and September 28, 2026 respectively.
| Parameter | ECGsource | STEMIcathAID |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 3.0 (8 ratings) | 3.3 (8 ratings) — better |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 8 | 8 |
| Update frequency | Every 4 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Best chart rank | #42 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 349 MB | 71 MB |
| Age rating | 12+ | 4+ |
| Developer | ECGsource LLC | Icahn School of Medicine at Mount Sinai |
Customer experience
ECGsource
STEMIcathAID
In-app purchases
ECGsource
No in-app purchases
STEMIcathAID
No in-app purchases






