# Guide to Diagnostic Tests vs MobileDDx™ Pocket DDx Tool

The clearest difference is ads: Guide to Diagnostic Tests at none against MobileDDx™ Pocket DDx Tool's shown. Guide to Diagnostic Tests also leads on rating (4.6 vs 4.4). MobileDDx™ Pocket DDx Tool's advantage is iOS requirement (13.0 vs 15.0). On price, review sentiment, ratings volume and update cadence there is nothing between them.

Both are free to download. Guide to Diagnostic Tests sells 1 one-off in-app purchase and MobileDDx™ Pocket DDx Tool sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Guide to Diagnostic Tests holds the better App Store score, 4.6 against 4.4. Both are backed by a comparable volume of ratings — 35 and 19 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

Guide to Diagnostic Tests ships an update every 9 months, MobileDDx™ Pocket DDx Tool every 5 months. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Guide to Diagnostic Tests | MobileDDx™ Pocket DDx Tool |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (35 ratings)](https://appshunter.io/ios/app/guide-to-diagnostic-tests/id910130424/reviews)** | [4.4 (19 ratings)](https://appshunter.io/ios/app/mobileddx-pocket-ddx-tool/id1076514957/reviews) |
| Number of ratings | **35** | 19 |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 9 months | **Every 5 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 10 MB | 48 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Unbound Medicine, Inc.](https://appshunter.io/developer/300420400) | [Skyscape Medpresso Inc](https://appshunter.io/developer/818609416) |

## 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 |


### MobileDDx™ Pocket DDx Tool

[App page](https://appshunter.io/ios/app/mobileddx-pocket-ddx-tool/id1076514957)

This medical reference tool provides over 1,000 differential diagnoses for medicine and surgery. It allows users to explore conditions by organ system, symptoms, or diseases, and includes 1-year online access. Powerful search technology enables quick information retrieval without an internet connection after initial download.

**Highlights:** Over 1,000 differential diagnoses, Sign & Symptom index, Disease Index, Explore by organ system, symptoms, or diseases, SmartSearch technology, Offline access, 1-year online access with WebView

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MobileDDx™ Pocket DDx Tool | $4.99 | one-time |


## Frequently asked questions

### Is Guide to Diagnostic Tests free?

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

### Is MobileDDx™ Pocket DDx Tool free?

MobileDDx™ Pocket DDx Tool is free to download, with in-app purchases available.

### Which has better reviews, Guide to Diagnostic Tests or MobileDDx™ Pocket DDx Tool?

Guide to Diagnostic Tests is rated higher. Guide to Diagnostic Tests averages 4.6 out of 5 from 35 ratings, while MobileDDx™ Pocket DDx Tool averages 4.4 from 19 ratings.

### Do Guide to Diagnostic Tests or MobileDDx™ Pocket DDx Tool have ads?

MobileDDx™ Pocket DDx Tool shows ads; Guide to Diagnostic Tests does not.

### Which is updated more often, Guide to Diagnostic Tests or MobileDDx™ Pocket DDx Tool?

Guide to Diagnostic Tests ships an update every 9 months, and MobileDDx™ Pocket DDx Tool every 5 months. Most recently, Guide to Diagnostic Tests was updated on November 6, 2026 and MobileDDx™ Pocket DDx Tool on November 2, 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.*