# CathSource vs Cathlas

The clearest difference is review sentiment: Cathlas at 100% against CathSource's 43%. Cathlas also leads on rating (5.0 vs 1.6) and monetization model (free vs paid). 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.

Cathlas holds the better App Store score, 5.0 against 1.6. Both are backed by a comparable volume of ratings — 23 and 18 respectively. Written reviews point the same way: 43% of CathSource's written reviews are positive against 100% of Cathlas's.

## The numbers

| Metric | CathSource | Cathlas |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.6 (23 ratings)](https://appshunter.io/ios/app/cathsource/id420847275/reviews) | **[5.0 (18 ratings)](https://appshunter.io/ios/app/cathlas/id1536276704/reviews)** |
| Number of ratings | **23** | 18 |
| Positive reviews | 42.9% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Paid | **Free** |
| Size | 79 MB | 31 MB |
| Requires iOS | 18.5 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [ECGsource LLC](https://appshunter.io/developer/377139096) | [Spectre Software Inc.](https://appshunter.io/developer/1439952651) |

## 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


### Cathlas

[App page](https://appshunter.io/ios/app/cathlas/id1536276704)

This medical reference app provides a collection of rare and important video images related to coronary angiography. It allows users to contribute educational content, which is then reviewed by experts before publication. The app serves as a practical aid for interventional cardiology professionals.

**Highlights:** Rare and important video images, Coronary artery anatomy, Complication recognition, Congenital heart disease, Mechanical valve fluoroscopies, Intracoronary imaging, Diagnostic skill practice

**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 Cathlas free?

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

### Which has better reviews, CathSource or Cathlas?

Cathlas is rated higher. CathSource averages 1.6 out of 5 from 23 ratings, while Cathlas averages 5.0 from 18 ratings.

### Do CathSource or Cathlas have ads?

Neither CathSource nor Cathlas shows ads.

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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.*