CathSource vs Cath Lab Hero
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
Cath Lab Hero
This clinical calculator assists cardiologists and trainees in interpreting right heart catheterization data. It rapidly transforms hemodynamic measurements into actionable clinical insights, aiding in complex calculations and confident interpretation at the point of care.
- Right heart cath analysis
- Hemodynamic parameter computation
- Shunt assessment (Qp:Qs)
- Aortic valve area calculation
- Supports cath lab and ICU use
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Cath Lab Hero is a precision clinical calculator designed for cardiologists, fellows, intensivists, and advanced trainees who interpret right heart catheterization data. Built for speed and accuracy at the point of care, Cath Lab Hero transforms raw hemodynamic measurements into meaningful clinical insights within seconds. Whether you're in the cath lab, ICU, or reviewing cases, Cath Lab Hero helps streamline complex calculations and supports confident hemodynamic interpretation. Comprehensive Right Heart Cath Analysis Quickly compute essential hemodynamic parameters: Cardiac Output (Fick method) Cardiac Index (CI) Stroke Volume (SV) Stroke Volume Index (SVI) Cardiac Power Output (CPO) Mean Pulmonary Artery Pressure (MPAP) Diastolic Pulmonary Gradient (DPG) Transpulmonary Gradient (TPG) Pulmonary Vascular Resistance (PVR) Systemic Vascular Resistance (SVR) Pulmonary Artery Pulsatility Index (PAPI) Aortic Pulsatility Index (API) Right Ventricular Stroke Work Index (RVSWI) Pulmonary Artery Compliance (PAC) Shunt Assessment Calculate Qp:Qs to evaluate for intracardiac shunts Supports rapid detection of step-ups and shunt physiology Aortic Valve Assessment Compute Aortic Valve Area using the Gorlin formula Helpful for invasive assessment of aortic stenosis severity Cath Lab Hero is intended for educational and clinical support purposes only and should be used in conjunction with professional clinical judgment.
Screenshots
Verdict
The clearest difference is rating: Cath Lab Hero at 5.0 against CathSource's 1.6. Cath Lab Hero also leads on monetization model (free vs paid) and update cadence (fortnightly vs every 2 months). CathSource's advantage is ratings volume (23 vs 2). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Cath Lab Hero holds the better App Store score, 5.0 against 1.6. That said, the two scores are not equally well evidenced: CathSource has 23 ratings behind it against 2, so its average is the more settled of the two.
CathSource ships an update every 2 months, Cath Lab Hero fortnightly. The most recent releases landed on September 18, 2026 and September 13, 2026 respectively.
| Parameter | CathSource | Cath Lab Hero |
|---|---|---|
| Price | Free | Free |
| Rating | 1.6 (23 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 42.9% of reviews | — |
| Number of ratings | 23 — better | 2 |
| Update frequency | Every 2 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.5 | 16.6 — better |
| Further details — not scored | ||
| Size | 79 MB | 6 MB |
| Age rating | 12+ | 17+ |
| Developer | ECGsource LLC | OJCmed LLC |
In-app purchases
CathSource
No in-app purchases
Cath Lab Hero
No in-app purchases







