# CathSource vs Cath Lab Hero

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.

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.

## The numbers

| Metric | CathSource | Cath Lab Hero |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.6 (23 ratings)](https://appshunter.io/ios/app/cathsource/id420847275/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/cath-lab-hero/id6759631073/reviews)** |
| Number of ratings | **23** | 2 |
| Positive reviews | 42.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Paid | **Free** |
| Size | 79 MB | 6 MB |
| Requires iOS | 18.5 | **16.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 12+ | 17+ |
| Developer | [ECGsource LLC](https://appshunter.io/developer/377139096) | [OJCmed LLC](https://appshunter.io/developer/1879942661) |

## 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


### Cath Lab Hero

[App page](https://appshunter.io/ios/app/cath-lab-hero/id6759631073)

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.

**Highlights:** Right heart cath analysis, Hemodynamic parameter computation, Shunt assessment (Qp:Qs), Aortic valve area calculation, Supports cath lab and ICU use

**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 Cath Lab Hero free?

Cath Lab Hero is free to download, with no in-app purchases.

### Which has better reviews, CathSource or Cath Lab Hero?

Cath Lab Hero is rated higher. CathSource averages 1.6 out of 5 from 23 ratings, while Cath Lab Hero averages 5.0 from 2 ratings.

### Do CathSource or Cath Lab Hero have ads?

Neither CathSource nor Cath Lab Hero shows ads.

### Which is updated more often, CathSource or Cath Lab Hero?

CathSource ships an update every 2 months, and Cath Lab Hero fortnightly. Most recently, CathSource was updated on September 18, 2026 and Cath Lab Hero on September 13, 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.*