# Guide to Diagnostic Tests vs Lab Notes & Diagnostic Tests

The clearest difference is ads: Guide to Diagnostic Tests at none against Lab Notes & Diagnostic Tests's shown. Guide to Diagnostic Tests also leads on chart position (#196 vs unranked) and ratings volume (35 vs 8). Lab Notes & Diagnostic Tests's advantage is rating (5.0 vs 4.6) and update cadence (every 4 months vs every 10 months). On price, review sentiment, in-app purchases and monetization model there is nothing between them.

Both are free to download. Guide to Diagnostic Tests sells 1 one-off in-app purchase and Lab Notes & Diagnostic Tests sells 2 in-app purchases, starting at $29.99 per year. Whichever you choose, the download price is not the number that matters.

Lab Notes & Diagnostic Tests holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 35 and 8 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

Guide to Diagnostic Tests ships an update every 10 months, Lab Notes & Diagnostic Tests every 4 months. The most recent releases landed on September 24, 2026 and July 4, 2026 respectively.

## The numbers

| Metric | Guide to Diagnostic Tests | Lab Notes & Diagnostic Tests |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (35 ratings)](https://appshunter.io/ios/app/guide-to-diagnostic-tests/id910130424/reviews) | **[5.0 (8 ratings)](https://appshunter.io/ios/app/lab-notes-and-diagnostic-tests/id1140857423/reviews)** |
| Number of ratings | **35** | 8 |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 10 months | **Every 4 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#196** | — |
| Size | 10 MB | 46 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)

**Currently charting:** #196 Top Grossing · Medical (US App Store)

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 |


### Lab Notes & Diagnostic Tests

[App page](https://appshunter.io/ios/app/lab-notes-and-diagnostic-tests/id1140857423)

This app serves as a portable reference for nurses, providing essential information on over 400 lab and diagnostic tests. It includes details on preparation, patient care, panic levels, and visual aids, with offline access after initial download.

**Highlights:** Covers 400+ lab and diagnostic tests, Includes radiography, imaging, and endoscopy, Identifies panic lab levels and nurse alerts, Features patient education guidelines, Offline access to content, SmartSearch technology for quick information retrieval

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lab Notes & Diagnostic Tests | $29.99 | per year |
| Lab Notes & Diagnostic Tests | $29.99 | 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 Lab Notes & Diagnostic Tests free?

Lab Notes & Diagnostic Tests is free to download, with in-app purchases available.

### Which has better reviews, Guide to Diagnostic Tests or Lab Notes & Diagnostic Tests?

Lab Notes & Diagnostic Tests is rated higher. Guide to Diagnostic Tests averages 4.6 out of 5 from 35 ratings, while Lab Notes & Diagnostic Tests averages 5.0 from 8 ratings.

### Do Guide to Diagnostic Tests or Lab Notes & Diagnostic Tests have ads?

Lab Notes & Diagnostic Tests shows ads; Guide to Diagnostic Tests does not.

### Which is updated more often, Guide to Diagnostic Tests or Lab Notes & Diagnostic Tests?

Guide to Diagnostic Tests ships an update every 10 months, and Lab Notes & Diagnostic Tests every 4 months. Most recently, Guide to Diagnostic Tests was updated on September 24, 2026 and Lab Notes & Diagnostic Tests on July 4, 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.*