# CathSource vs CatchUpCardio

The clearest difference is in-app purchases: CathSource at none against CatchUpCardio's 2. CatchUpCardio's advantage is update cadence (every 3 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. CatchUpCardio sells 2 one-off in-app purchases. CathSource asks for nothing beyond the download.

CathSource ships an update every 2 months, CatchUpCardio every 3 days. The most recent releases landed on October 12, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | CathSource | CatchUpCardio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.6 (23 ratings)](https://appshunter.io/ios/app/cathsource/id420847275/reviews)** | — |
| Number of ratings | **23** | — |
| Positive reviews | 38.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Monetization | Paid | — |
| Size | 79 MB | 2 MB |
| Requires iOS | 18.5 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 17+ |
| Developer | [ECGsource LLC](https://appshunter.io/developer/377139096) | [Sven van Egmond](https://appshunter.io/developer/6792272389) |

## 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


### CatchUpCardio

[App page](https://appshunter.io/ios/app/catchupcardio-cardiology/id6803083830)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small coffee for the developer | $1.99 | one-time |
| Large coffee for the developer | $7.99 | one-time |


## Frequently asked questions

### Is CathSource free?

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

### Is CatchUpCardio free?

CatchUpCardio is free to download, with in-app purchases available.

### Do CathSource or CatchUpCardio have ads?

Neither CathSource nor CatchUpCardio shows ads.

### Which is updated more often, CathSource or CatchUpCardio?

CathSource ships an update every 2 months, and CatchUpCardio every 3 days. Most recently, CathSource was updated on October 12, 2026 and CatchUpCardio on October 15, 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.*