# CathSource vs CTisus CT Coronary Arteries

The clearest difference is review sentiment: CTisus CT Coronary Arteries at 100% against CathSource's 38%. CTisus CT Coronary Arteries also leads on rating (4.9 vs 1.6) and monetization model (free vs paid). CathSource's advantage is update cadence (every 2 months vs every 5 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

CTisus CT Coronary Arteries holds the better App Store score, 4.9 against 1.6. Both are backed by a comparable volume of ratings — 24 and 54 respectively. Written reviews point the same way: 38% of CathSource's written reviews are positive against 100% of CTisus CT Coronary Arteries's.

CathSource ships an update every 2 months, CTisus CT Coronary Arteries every 5 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | CathSource | CTisus CT Coronary Arteries |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.6 (24 ratings)](https://appshunter.io/ios/app/cathsource/id420847275/reviews) | **[4.9 (54 ratings)](https://appshunter.io/ios/app/ctisus-ct-coronary-arteries/id943156650/reviews)** |
| Number of ratings | 24 | **54** |
| Positive reviews | 38.5% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Paid | **Free** |
| Size | 79 MB | 71 MB |
| Requires iOS | 18.5 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [ECGsource LLC](https://appshunter.io/developer/377139096) | [Elliot Fishman](https://appshunter.io/developer/399024444) |

## What reviewers say

### CathSource

[App page](https://appshunter.io/ios/app/cathsource/id420847275)

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:** macOS Compatibility

**In-app purchases:** none


### CTisus CT Coronary Arteries

[App page](https://appshunter.io/ios/app/ctisus-ct-coronary-arteries/id943156650)

An educational resource for understanding coronary anomalies. It offers figures, diagrams, case examples, and video discussions for medical professionals. Designed to be a valuable tool for learning and comprehension.

**Highlights:** Organized approach to coronary anomalies, Figures and diagrams, Case examples, Video discussions, Multimedia resources

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is CathSource free?

CathSource is free to download, with no in-app purchases.

### Is CTisus CT Coronary Arteries free?

CTisus CT Coronary Arteries is free to download, with no in-app purchases.

### Which has better reviews, CathSource or CTisus CT Coronary Arteries?

CTisus CT Coronary Arteries is rated higher. CathSource averages 1.6 out of 5 from 24 ratings, while CTisus CT Coronary Arteries averages 4.9 from 54 ratings.

### Do CathSource or CTisus CT Coronary Arteries have ads?

Neither CathSource nor CTisus CT Coronary Arteries shows ads.

### Which is updated more often, CathSource or CTisus CT Coronary Arteries?

CathSource ships an update every 2 months, and CTisus CT Coronary Arteries every 5 months. Most recently, CathSource was updated on October 24, 2026 and CTisus CT Coronary Arteries on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*