Comparison

ECGsource vs MCSAID

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

Head to head
About

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.

Highlights
  • Searchable ECG diagnoses and criteria
  • High-resolution sample ECG images
  • ECG quiz (demo)
  • Video tutorials for beginners
  • Board review preparation
Features
Currently charting
Read full description

**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.

About

MCSAID

Features
Read full description

MCSAID is an educational application dedicated to the topic of mechanical cardiocirculatory support for patients with cardiogenic shock. A basic section introduces the definitions and classifications of cardiogenic shock as well as some of the common devices used for hemodynamic support in unstable patients. There is an algorithm for helping understand the decision process depending on key clinical variables such as cardiac output and PAPI. There are also several weaning and escalation algorithm. A calculator section is available for some common hemodynamic variables used in MCS decision-making and is available for quick-reference throughout the algorithm. MCSAID is an educational application for medical professionals and is not intended for making medical diagnoses. Medical decisions must be made by licensed professionals with the entire context of a patient’s medical history. If you are seeking a medical diagnosis, contact your physician and if you are experiencing a medical emergency, call your local emergency medical services.

Screenshots

ECGsource4 screens
MCSAID4 screens

Verdict

The call

The clearest difference is price: MCSAID at Free against ECGsource's $0.99. ECGsource's advantage is update cadence (every 4 months vs every 40 months) and chart position (#41 vs unranked). On 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

CostPrice · In-app purchases · Ads · Monetization

MCSAID is free to download; ECGsource costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

ECGsource ships an update every 4 months, MCSAID every 40 months. The most recent releases landed on September 21, 2026 and September 12, 2026 respectively.

Scorecard4 real differences · 7 level
ECGsource versus MCSAID: the parameters behind the verdict, then further details
ParameterECGsourceMCSAID
Price$0.99Free — better
Rating3.0 (8 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings8 — better—
Update frequencyEvery 4 months — betterEvery 40 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
Best chart rank#41 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS9.0 — better15.0
Further details — not scored
Size349 MB46 MB
Age rating12+17+
DeveloperECGsource LLCCardiology Apps LLC

In-app purchases

None

ECGsource

No in-app purchases

None

MCSAID

No in-app purchases

Questions

Is ECGsource free?
ECGsource costs $0.99, with no in-app purchases.
Is MCSAID free?
MCSAID is free to download, with no in-app purchases.
Do ECGsource or MCSAID have ads?
Neither ECGsource nor MCSAID shows ads.
Which is updated more often, ECGsource or MCSAID?
ECGsource ships an update every 4 months, and MCSAID every 40 months. Most recently, ECGsource was updated on September 21, 2026 and MCSAID on September 12, 2026.

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