# Parathyroid Surgery Guide vs Cathlas

The clearest difference is ratings volume: Parathyroid Surgery Guide at 534 against Cathlas's 18. Cathlas's advantage is iOS requirement (13.0 vs 16.6). On price, rating, review sentiment and ads 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 — 4.9 for Parathyroid Surgery Guide against 5.0 for Cathlas. That said, the two scores are not equally well evidenced: Parathyroid Surgery Guide has 534 ratings behind it against 18, so its average is the more settled of the two. Written reviews split almost evenly too, at 99% and 100% positive.

## The numbers

| Metric | Parathyroid Surgery Guide | Cathlas |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (534 ratings)](https://appshunter.io/ios/app/parathyroid-surgery-guide/id1300780047/reviews) | **[5.0 (18 ratings)](https://appshunter.io/ios/app/cathlas/id1536276704/reviews)** |
| Number of ratings | **534** | 18 |
| Positive reviews | 99.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | — |
| Monetization | Free | Free |
| Size | 12 MB | 31 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Calcium Science, LLC](https://appshunter.io/developer/587386616) | [Spectre Software Inc.](https://appshunter.io/developer/1439952651) |

## What reviewers say

### Parathyroid Surgery Guide

[App page](https://appshunter.io/ios/app/parathyroid-surgery-guide/id1300780047)

This app provides comprehensive guidance for individuals undergoing parathyroid surgery. It covers preparation, the day of surgery, post-operative care, and common questions. It also includes features for family and friends to stay informed.

**Highlights:** Pre-operative preparation advice, Day of surgery essentials, Post-operative recovery expectations, Frequently asked questions, Video testimonial creation, Searchable topic index

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Extremely useful app
- 👍 Very thorough guide
- 👍 Comprehensive
- 👍 Wonderful app
- 👍 Excellent site

**What reviewers complain about**

- 🗓 App definitely need an update

**Reported bugs**

- Login screen freezes
- Incompatible with older devices

**Requested features**

- Dark mode option
- Advanced analytics dashboard


### 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 Parathyroid Surgery Guide free?

Parathyroid Surgery Guide 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, Parathyroid Surgery Guide or Cathlas?

Cathlas is rated higher. Parathyroid Surgery Guide averages 4.9 out of 5 from 534 ratings, while Cathlas averages 5.0 from 18 ratings.

### Do Parathyroid Surgery Guide or Cathlas have ads?

Neither Parathyroid Surgery Guide nor Cathlas shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*