Comparison

CathSource vs STEMIcathAID

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

CathSource

A comprehensive medical reference focused on cardiac catheterization and angiography. It offers a searchable index of specialized topics, a database of videos of common and rare findings, and a collection of images including hemodynamic formulas and tables.

Highlights
  • Searchable index of cardiac catheterization topics
  • Database of coronary angiogram, ventriculogram, and aortogram videos
  • Image database with hemodynamic formulas and tables
  • Covers common and rare cardiovascular pathologies
  • Developed by practicing Interventional Cardiologists
Features
Read full description

CathSource (from the creators of ECGsource) is an up-to-date medical reference devoted exclusively to cardiac catheterization and angiography. Developed by practicing Interventional Cardiologists for both specialists and trainees in the field of cardiovascular disease, CathSource offers the following content: * Searchable index of specialized topics including: Normal Coronary Anatomy Anomalous Coronary Arteries Coronary Artery Aneurysms Myocardial Bridging Takotsubo Cardiomyopathy Plaque Rupture & Thrombus Standard Views of Angiography Left Ventriculography Coarctation of the Aorta Femoral Artery Access for Angiography Radial Artery Access for Angiography Intravascular Ultrasound (IVUS) Optical Coherence Tomography (OCT) Fractional Flow Reserve (FFR) Hemodynamics: Intracardiac Pressures Hemodynamics: Intracardiac Waveforms Hemodynamics: Cardiac Output Hemodynamics: Intracardiac Shunts Hemodynamics: Aortic Stenosis Hemodynamcis: Aortic Regurgitation Hemodynamics: Mitral Stenosis Hemodynamcis: Mitral Regurgitation Hemodynamcis: Constriction Hemodynamics: Restriction * Searchable database containing more than 30 videos (coronary angiograms, ventriculograms, and aortograms) of both common and rare findings in the cardiac catheterization lab * Searchable database of over 65 images including hemodynamic formulas, tables, and figures CathSource provides a detailed overview of important cardiac catheterization and angiography topics, incorporating educational images/videos as well as reviews of pertinent medical literature. CathSource is the ideal application to assist you in understanding and recognizing cardiovascular pathology in the catheterization lab.

About

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.

Highlights
  • 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
Features
Read full description

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

CathSource4 screens
STEMIcathAID4 screens

Verdict

The call

The clearest difference is rating: STEMIcathAID at 3.3 against CathSource's 1.6. STEMIcathAID also leads on monetization model (free vs paid) and iOS requirement (15.1 vs 18.5). On price, ratings volume, update cadence and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

STEMIcathAID holds the better App Store score, 3.3 against 1.6. Both are backed by a comparable volume of ratings — 23 and 8 respectively.

UpkeepUpdate frequency

CathSource ships an update every 2 months, STEMIcathAID every 3 months. The most recent releases landed on October 12, 2026 and September 28, 2026 respectively.

Scorecard3 real differences · 7 level
CathSource versus STEMIcathAID: the parameters behind the verdict, then further details
ParameterCathSourceSTEMIcathAID
PriceFreeFree
Rating1.6 (23 ratings)3.3 (8 ratings) — better
Positive reviews38.5% of reviews—
Number of ratings23 — better8
Update frequencyEvery 2 months — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.515.1 — better
Further details — not scored
Size79 MB71 MB
Age rating12+4+
DeveloperECGsource LLCIcahn School of Medicine at Mount Sinai

Customer experience

CathSource

All ratings23 ratings
Positive8.7%
Neutral8.7%
Negative82.6%
Written reviews39 reviews
Positive38.5%
Neutral7.7%
Negative53.8%

STEMIcathAID

All ratings8 ratings
Positive50.0%
Neutral12.5%
Negative37.5%

In-app purchases

None

CathSource

No in-app purchases

None

STEMIcathAID

No in-app purchases

Questions

Is CathSource free?
CathSource is free to download, with no in-app purchases.
Is STEMIcathAID free?
STEMIcathAID is free to download, with no in-app purchases.
Which has better reviews, CathSource or STEMIcathAID?
STEMIcathAID is rated higher. CathSource averages 1.6 out of 5 from 23 ratings, while STEMIcathAID averages 3.3 from 8 ratings.
Do CathSource or STEMIcathAID have ads?
Neither CathSource nor STEMIcathAID shows ads.
Which is updated more often, CathSource or STEMIcathAID?
CathSource ships an update every 2 months, and STEMIcathAID every 3 months. Most recently, CathSource was updated on October 12, 2026 and STEMIcathAID on September 28, 2026.

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