# Guide to Diagnostic Tests vs Washington Manual Bundle App

Guide to Diagnostic Tests and Washington Manual Bundle App both sit at 4.6 stars, but that hides the real split: 100% of Washington Manual Bundle App's written reviews are positive against 0% of Guide to Diagnostic Tests's. Washington Manual Bundle App also leads on monetization model (free vs free with in-app purchases) and iOS requirement (9.0 vs 15.0). Guide to Diagnostic Tests's advantage is update cadence (every 9 months vs every 21 months). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Guide to Diagnostic Tests sells 1 one-off in-app purchase and Washington Manual Bundle App sells 16 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.6 for Guide to Diagnostic Tests against 4.7 for Washington Manual Bundle App. Both are backed by a comparable volume of ratings — 35 and 37 respectively. Written reviews are what separate them: 0% of Guide to Diagnostic Tests's written reviews are positive against 100% of Washington Manual Bundle App's.

Guide to Diagnostic Tests ships an update every 9 months, Washington Manual Bundle App every 21 months. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Guide to Diagnostic Tests | Washington Manual Bundle App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (35 ratings)](https://appshunter.io/ios/app/guide-to-diagnostic-tests/id910130424/reviews) | **[4.7 (37 ratings)](https://appshunter.io/ios/app/washington-manual-bundle-app/id1398706447/reviews)** |
| Number of ratings | 35 | **37** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 9 months** | Every 21 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 10 MB | 57 MB |
| Requires iOS | 15.0 | **9.0** |
| 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 |


### Washington Manual Bundle App

[App page](https://appshunter.io/ios/app/washington-manual-bundle-app/id1398706447)

This medical reference app provides essential resources for residents, including diagnostic tools, drug information, and clinical calculators. Access critical patient care information offline, ensuring quick and accurate decision-making on rounds or during emergencies.

**Highlights:** Differential diagnosis tool, Drug guide with dosing calculators, Clinical lab test descriptions, Medical formulae calculator, Offline access to resources, SmartSearch technology

**Features:** macOS Compatibility

**In-app purchases (16)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MobileDDx | $4.99 | one-time |
| Washington Manual™ Hematology | $49.99 | one-time |
| Washington Manual Neurology | $49.99 | one-time |
| Washington Manual Cardiology | $49.99 | one-time |
| Washington MNL Outpatient Medi | $49.99 | one-time |
| Washington Manual Geriatrics | $49.99 | one-time |
| WashMnl Pul Med Subspe Consult | $49.99 | one-time |
| WashMnl Psych Survival Guide | $49.99 | one-time |
| Washington Manual Ob/Gy Guide | $49.99 | one-time |
| Washington Manual of Oncology | $49.99 | one-time |
| Washington Manual Surgery | $49.99 | one-time |
| Skyscape Labs™ | $49.99 | one-time |
| Washington Manu. Critical Care | $59.99 | one-time |
| Washington Manual-Medical Ther | $74.99 | one-time |
| Washington Manual Bundle 2022 | $99.99 | one-time |
| Washington Manual Bundle 2024 | $99.99 | 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 Washington Manual Bundle App free?

Washington Manual Bundle App is free to download, with in-app purchases available.

### Which has better reviews, Guide to Diagnostic Tests or Washington Manual Bundle App?

Washington Manual Bundle App is rated higher. Guide to Diagnostic Tests averages 4.6 out of 5 from 35 ratings, while Washington Manual Bundle App averages 4.7 from 37 ratings.

### Do Guide to Diagnostic Tests or Washington Manual Bundle App have ads?

Neither Guide to Diagnostic Tests nor Washington Manual Bundle App shows ads.

### Which is updated more often, Guide to Diagnostic Tests or Washington Manual Bundle App?

Guide to Diagnostic Tests ships an update every 9 months, and Washington Manual Bundle App every 21 months. Most recently, Guide to Diagnostic Tests was updated on October 27, 2026 and Washington Manual Bundle App on October 24, 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.*