# Guide to Diagnostic Tests vs VanderbiltDDx

The clearest difference is in-app purchases: VanderbiltDDx at none against Guide to Diagnostic Tests's 1. VanderbiltDDx also leads on rating (5.0 vs 4.6) and iOS requirement (13.5 vs 15.0). Guide to Diagnostic Tests's advantage is ratings volume (35 vs 1). On price, ads and device support there is nothing between them.

Both are free to download. Guide to Diagnostic Tests sells 1 one-off in-app purchase. VanderbiltDDx asks for nothing beyond the download.

VanderbiltDDx holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Guide to Diagnostic Tests has 35 ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | Guide to Diagnostic Tests | VanderbiltDDx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (35 ratings)](https://appshunter.io/ios/app/guide-to-diagnostic-tests/id910130424/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/vanderbiltddx-case-simulator/id1484979647/reviews)** |
| Number of ratings | **35** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 months | — |
| Monetization | Free with in-app purchases | **Free** |
| Size | 10 MB | 28 MB |
| Requires iOS | 15.0 | **13.5** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Unbound Medicine, Inc.](https://appshunter.io/developer/300420400) | [Vanderbilt University Medical Center](https://appshunter.io/developer/1114939673) |

## What reviewers say

### Guide to Diagnostic Tests

[App page](https://appshunter.io/ios/app/guide-to-diagnostic-tests/id910130424)

Access evidence-based information on over 450 diagnostic tests, including lab work, imaging, and therapeutic monitoring. This resource helps healthcare professionals quickly find answers to common questions about test selection, interpretation, and patient preparation.

**Highlights:** 450+ diagnostic tests, Evidence-based recommendations, Algorithms, tables, and charts, PubMed links, Custom notes and highlighting, Full-text search, Favorites for bookmarking

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pocket Guide to Diagnostic Tests | $54.99 | one-time |


### VanderbiltDDx

[App page](https://appshunter.io/ios/app/vanderbiltddx-case-simulator/id1484979647)

Practice and refine your diagnostic skills with realistic patient cases. This app generates logically consistent findings based on a vast knowledge base of disorders and their associated symptoms. It helps users identify hypotheses, assess evidence, and review disorder information for improved learning.

**Highlights:** Realistic patient case generation, Evidence-based knowledge base, Hypothesis testing and assessment, Performance evaluation, Disorder-related information review, Customizable difficulty levels

**In-app purchases:** none


## Frequently asked questions

### Is Guide to Diagnostic Tests free?

Guide to Diagnostic Tests is free to download, with in-app purchases available.

### Is VanderbiltDDx free?

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

### Which has better reviews, Guide to Diagnostic Tests or VanderbiltDDx?

VanderbiltDDx is rated higher. Guide to Diagnostic Tests averages 4.6 out of 5 from 35 ratings, while VanderbiltDDx averages 5.0 from 1 ratings.

### Do Guide to Diagnostic Tests or VanderbiltDDx have ads?

Neither Guide to Diagnostic Tests nor VanderbiltDDx 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.*