# Cathlas vs IVUSAID

The clearest difference is ads: Cathlas at none against IVUSAID's shown. Cathlas also leads on ratings volume (18 vs 1) and monetization model (free vs ad-supported). On price, rating, 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.

On the App Store both sit at effectively the same score — 5.0 for Cathlas against 5.0 for IVUSAID. That said, the two scores are not equally well evidenced: Cathlas has 18 ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | Cathlas | IVUSAID |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (18 ratings)](https://appshunter.io/ios/app/cathlas/id1536276704/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/ivusaid/id6447531663/reviews) |
| Number of ratings | **18** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | — | Every 18 months |
| Monetization | **Free** | Ad-supported |
| Size | 31 MB | 80 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Spectre Software Inc.](https://appshunter.io/developer/1439952651) | [Cardiology Apps LLC](https://appshunter.io/developer/1639925847) |

## What reviewers say

### 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


### IVUSAID

[App page](https://appshunter.io/ios/app/ivusaid/id6447531663)

This free educational app teaches medical professionals how to use intravascular ultrasound (IVUS) for PCI guidance. It features interactive lessons, image interpretation tools, and complex case studies to overcome barriers to IVUS adoption.

**Highlights:** IVUS principles and image acquisition, Image interpretation with videos and descriptions, Complex coronary case studies, Interactive quiz section with explanations, PCI guidance for stent sizing and optimization

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Cathlas free?

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

### Is IVUSAID free?

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

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

Cathlas and IVUSAID are both rated 5.0 out of 5 on the App Store, from 18 and 1 ratings respectively.

### Do Cathlas or IVUSAID have ads?

IVUSAID shows ads; Cathlas does not.

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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.*