EchoSource vs STEMIcathAID
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EchoSource
This medical reference app offers a comprehensive guide to echocardiography, featuring a searchable index of specialized topics and a database of over 90 images and videos. It's designed for cardiologists and trainees to quickly reference diagnostic criteria and clinical disorders.
- Searchable index of specialized echocardiography topics
- Database of over 90 figures, images, and videos
- Detailed overview of clinical disorders
- Evaluation using echocardiography
- Reviews of pertinent medical literature
- Reference for guideline-based diagnostic criteria
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EchoSource (from the creators of ECGsource and CathSource) is a medical reference devoted exclusively to echocardiography. Developed by practicing cardiologists for both specialists and trainees in the field of cardiovascular disease, EchoSource offers the following content: * Searchable index of specialized topics including: History of Echocardiography Transthoracic Echo – Learning the Procedure Transesophageal Echo – Learning the Procedure Standard Transthoracic Echocardiography Views Standard Transesophageal Echocardiography Views Hemodynamics: Doppler Overview Hemodynamics: Color Flow Imaging Hemodynamics: Transvalvular Gradients Hemodynamics: Intracardiac Pressures Hemodynamics: Cardiac Flow & the Continuity Equation Hemodynamics: Proximal Isovelocity Surface Area (PISA) Left Ventricle: Systolic Function Left Ventricle: Diastolic Function Valvular: Aortic Stenosis Valvular: Aortic Regurgitation Valvular: Mitral Stenosis Valvular: Mitral Regurgitation Valvular: Pulmonic Stenosis Valvular: Pulmonic Regurgitation Valvular: Tricuspid Stenosis Valvular: Tricuspid Regurgitation Valvular: Prosthetic Valves Clinical Disorder: Aortic Dissection Clinical Disorder: Atrial Septal Defect Clinical Disorder: Constrictive Pericarditis vs. Restrictive Cardiomyopathy Clinical Disorder: Hypertrophic Cardiomyopathy Clinical Disorder: Intracardiac Masses - Endocarditis & Vegetations Clinical Disorder: Intracardiac Masses - Thrombus Clinical Disorder: Intracardiac Masses - Tumors Clinical Disorder: Pericardial Effusion Clinical Disorder: Pseudoaneurysm Clinical Disorder: Pulmonary Artery Hypertension Clinical Disorder: Subaortic Membrane Clinical Disorder: Ventricular Septal Defect * Searchable database consisting of more than 90 figures, images, and echocardiography videos of both common and rare findings in the field of echocardiography EchoSource provides a detailed overview of clinical disorders and their evaluation using echocardiography, incorporating educational figures and videos as well as reviews of pertinent medical literature. Whether you are a beginner just learning standard echocardiography imaging views, or a practicing clinician needing a quick reference to guideline-based echocardiographic criteria for diagnosing the severity of valvular heart disease, EchoSource is the ideal application to assist you.
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 EchoSource's $1.99. STEMIcathAID also leads on rating (3.3 vs 2.8) and update cadence (every 3 months vs every 18 months). EchoSource's advantage is iOS requirement (12.0 vs 15.1). On ratings volume, ads, in-app purchases and device support 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; EchoSource costs $1.99 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 2.8. Both are backed by a comparable volume of ratings — 6 and 8 respectively.
EchoSource ships an update every 18 months, STEMIcathAID every 3 months. The most recent releases landed on October 2, 2026 and September 28, 2026 respectively.
| Parameter | EchoSource | STEMIcathAID |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 2.8 (6 ratings) | 3.3 (8 ratings) — better |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 6 | 8 — better |
| Update frequency | Every 18 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 140 MB | 71 MB |
| Age rating | 12+ | 4+ |
| Developer | ECGsource LLC | Icahn School of Medicine at Mount Sinai |
Customer experience
EchoSource
STEMIcathAID
In-app purchases
EchoSource
No in-app purchases
STEMIcathAID
No in-app purchases









