# CathSource vs CTRN Prep 2024

The clearest difference is price: CathSource at Free against CTRN Prep 2024's $19.99. CTRN Prep 2024's advantage is iOS requirement (14.0 vs 18.5). On ads, in-app purchases and device support there is nothing between them.

CathSource is free to download; CTRN Prep 2024 costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | CathSource | CTRN Prep 2024 |
| --- | --- | --- |
| Price | **Free** | $19.99 |
| 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 | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Paid | — |
| Size | 79 MB | 124 MB |
| Requires iOS | 18.5 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [ECGsource LLC](https://appshunter.io/developer/377139096) | [Learn-Train Inc](https://appshunter.io/developer/1695340059) |

## 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


### CTRN Prep 2024

[App page](https://appshunter.io/ios/app/ctrn-prep-2024/id6477150084)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CathSource free?

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

### Is CTRN Prep 2024 free?

CTRN Prep 2024 costs $19.99, with no in-app purchases.

### Do CathSource or CTRN Prep 2024 have ads?

Neither CathSource nor CTRN Prep 2024 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.*