# Guide to Diagnostic Tests vs APRN and PA’s Complete Guide

The clearest difference is ads: Guide to Diagnostic Tests at none against APRN and PA’s Complete Guide's shown. APRN and PA’s Complete Guide's advantage is iOS requirement (13.0 vs 15.0). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Guide to Diagnostic Tests sells 1 one-off in-app purchase and APRN and PA’s Complete Guide sells 2 in-app purchases, starting at $39.99 per year. 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 4.5 for APRN and PA’s Complete Guide. Both are backed by a comparable volume of ratings — 35 and 24 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

Guide to Diagnostic Tests ships an update every 9 months, APRN and PA’s Complete Guide every 8 months. The most recent releases landed on October 22, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Guide to Diagnostic Tests | APRN and PA’s Complete Guide |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (35 ratings)](https://appshunter.io/ios/app/guide-to-diagnostic-tests/id910130424/reviews)** | [4.5 (24 ratings)](https://appshunter.io/ios/app/aprn-and-pas-complete-guide/id1558030569/reviews) |
| Number of ratings | **35** | 24 |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 9 months | **Every 8 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 10 MB | 148 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 |


### APRN and PA’s Complete Guide

[App page](https://appshunter.io/ios/app/aprn-and-pas-complete-guide/id1558030569)

This prescribing reference offers guidance on drug therapy for advanced healthcare providers and students. It includes over 600 diagnoses with detailed pharmacotherapy regimens, lab monitoring, and patient teaching points. Content is updated digitally and accessible offline.

**Highlights:** Over 600 diagnoses with pharmacotherapy regimens, Detailed drug information including dosing and FDA pregnancy category, Lab values to monitor and patient teaching points, Alphabetical diagnosis and drug cross-reference, Digital updates and offline access, SmartSearch technology for quick information retrieval

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| APRN & PA’s Complete Guide | $39.99 | per year |
| APRN & PA’s Complete Guide | $39.99 | 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 APRN and PA’s Complete Guide free?

APRN and PA’s Complete Guide is free to download, with in-app purchases available.

### Which has better reviews, Guide to Diagnostic Tests or APRN and PA’s Complete Guide?

Guide to Diagnostic Tests is rated higher. Guide to Diagnostic Tests averages 4.6 out of 5 from 35 ratings, while APRN and PA’s Complete Guide averages 4.5 from 24 ratings.

### Do Guide to Diagnostic Tests or APRN and PA’s Complete Guide have ads?

APRN and PA’s Complete Guide shows ads; Guide to Diagnostic Tests does not.

### Which is updated more often, Guide to Diagnostic Tests or APRN and PA’s Complete Guide?

Guide to Diagnostic Tests ships an update every 9 months, and APRN and PA’s Complete Guide every 8 months. Most recently, Guide to Diagnostic Tests was updated on October 22, 2026 and APRN and PA’s Complete Guide on October 16, 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.*