# Davis’s Lab & Diagnostic Tests vs RNotes

The clearest difference is ads: Davis’s Lab & Diagnostic Tests at none against RNotes's shown. Davis’s Lab & Diagnostic Tests also leads on ratings volume (84 vs 26). RNotes's advantage is rating (5.0 vs 4.7) and iOS requirement (13.0 vs 15.0). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. Davis’s Lab & Diagnostic Tests sells 1 one-off in-app purchase and RNotes sells 3 in-app purchases, starting at $29.99 per year. Whichever you choose, the download price is not the number that matters.

RNotes holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 84 and 26 respectively.

Davis’s Lab & Diagnostic Tests ships an update every 8 months, RNotes every 5 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Davis’s Lab & Diagnostic Tests | RNotes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (84 ratings)](https://appshunter.io/ios/app/daviss-lab-and-diagnostic-tests/id1005061939/reviews) | **[5.0 (26 ratings)](https://appshunter.io/ios/app/rnotes-nurses-pocket-guide/id1145374210/reviews)** |
| Number of ratings | **84** | 26 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | **Every 5 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| 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

### Davis’s Lab & Diagnostic Tests

[App page](https://appshunter.io/ios/app/daviss-lab-and-diagnostic-tests/id1005061939)

This app provides comprehensive guidance on hundreds of diagnostic tests, including interpretation of results, patient preparation, and post-test care. It's designed for nurses and healthcare professionals to understand and implement critical test procedures effectively.

**Highlights:** Over 400 lab and diagnostic test monographs, Subspecialty test coverage, Nursing implications and clinical judgment sections, Cross-reference links to related tests, Patient preparation and specimen collection guides, Advanced search and favorites functionality

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Davis's Lab and Dx Tests | $49.99 | one-time |


### RNotes

[App page](https://appshunter.io/ios/app/rnotes-nurses-pocket-guide/id1145374210)

This medical reference app provides essential nursing information for students and professionals. It offers quick access to clinical content, NCLEX tips, and safety alerts, with updated guidelines and laboratory values. An in-app purchase unlocks all features and ongoing updates.

**Highlights:** Nursing Alerts for critical safety information, HIPAA- and OSHA-compliant notes, Quick-access tabs for fast navigation, Highlighted critical laboratory values, Interventions and patient education, ACLS resuscitation procedures

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RNotes 1/Y Sub | $29.99 | per year |
| RNotes®: Nurse's Clinical Pock | $29.99 | one-time |
| RNotes Ed.6 | $29.99 | one-time |


## Frequently asked questions

### Is Davis’s Lab & Diagnostic Tests free?

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

### Is RNotes free?

RNotes is free to download, with in-app purchases available.

### Which has better reviews, Davis’s Lab & Diagnostic Tests or RNotes?

RNotes is rated higher. Davis’s Lab & Diagnostic Tests averages 4.7 out of 5 from 84 ratings, while RNotes averages 5.0 from 26 ratings.

### Do Davis’s Lab & Diagnostic Tests or RNotes have ads?

RNotes shows ads; Davis’s Lab & Diagnostic Tests does not.

### Which is updated more often, Davis’s Lab & Diagnostic Tests or RNotes?

Davis’s Lab & Diagnostic Tests ships an update every 8 months, and RNotes every 5 months. Most recently, Davis’s Lab & Diagnostic Tests was updated on November 1, 2026 and RNotes 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.*