CathSource vs IVUS + Physiology Pro
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.
IVUS + Physiology Pro
This app helps healthcare professionals master FFR waveform and IVUS image interpretation. It offers practice tools, real case examples, and video guides for detailed image analysis.
- FFR waveform interpretation guide
- IVUS image interpretation guide
- Practice IVUS measurements
- Compare results with real cases
- IVUS video clips
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This app is intended for healthcare professionals who want to become more familiar with FFR waveform and IVUS image interpretation. Features include: • IVUS image and FFR waveform interpretation guide with questions • Practice IVUS measurements and compare results with real case examples • IVUS video clips with image interpretation guide
Screenshots
Verdict
The clearest difference is review sentiment: IVUS + Physiology Pro at 100% against CathSource's 43%. IVUS + Physiology Pro also leads on rating (5.0 vs 1.6) and monetization model (free vs paid). CathSource's advantage is update cadence (every 2 months vs every 7 months) and ratings volume (23 vs 6). 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.
IVUS + Physiology Pro holds the better App Store score, 5.0 against 1.6. Both are backed by a comparable volume of ratings — 23 and 6 respectively. Written reviews point the same way: 43% of CathSource's written reviews are positive against 100% of IVUS + Physiology Pro's.
CathSource ships an update every 2 months, IVUS + Physiology Pro every 7 months. The most recent releases landed on September 18, 2026 and September 17, 2026 respectively.
| Parameter | CathSource | IVUS + Physiology Pro |
|---|---|---|
| Price | Free | Free |
| Rating | 1.6 (23 ratings) | 5.0 (6 ratings) — better |
| Positive reviews | 42.9% of reviews | 100.0% of reviews — better |
| Number of ratings | 23 — better | 6 |
| Update frequency | Every 2 months — better | Every 7 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.5 | 10.0 — better |
| Further details — not scored | ||
| Size | 79 MB | 104 MB |
| Age rating | 12+ | 12+ |
| Developer | ECGsource LLC | Boston Scientific |
Customer experience
CathSource
IVUS + Physiology Pro
In-app purchases
CathSource
No in-app purchases
IVUS + Physiology Pro
No in-app purchases
