# Lab Values Reference Guide vs FNP Mastery | Exam Prep 2026

The clearest difference is rating: FNP Mastery | Exam Prep 2026 at 4.9 against Lab Values Reference Guide's 2.9. FNP Mastery | Exam Prep 2026 also leads on update cadence (every 2 months vs every 7 months) and ratings volume (108 vs 9). Lab Values Reference Guide's advantage is in-app purchases (none vs 13) and iOS requirement (9.3 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. FNP Mastery | Exam Prep 2026 sells 13 in-app purchases, starting at $12.99 per 7 days. Lab Values Reference Guide asks for nothing beyond the download.

FNP Mastery | Exam Prep 2026 holds the better App Store score, 4.9 against 2.9. That said, the two scores are not equally well evidenced: FNP Mastery | Exam Prep 2026 has 108 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 89% of Lab Values Reference Guide's written reviews are positive against 100% of FNP Mastery | Exam Prep 2026's.

Lab Values Reference Guide ships an update every 7 months, FNP Mastery | Exam Prep 2026 every 2 months. Both last shipped on October 2, 2026.

## The numbers

| Metric | Lab Values Reference Guide | FNP Mastery | Exam Prep 2026 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.9 (9 ratings)](https://appshunter.io/ios/app/lab-values-reference-guide/id1071740731/reviews) | **[4.9 (108 ratings)](https://appshunter.io/ios/app/fnp-mastery-exam-prep-2026/id6451448711/reviews)** |
| Number of ratings | 9 | **108** |
| Positive reviews | 88.9% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 27 MB | 61 MB |
| Requires iOS | **9.3** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 12+ |
| Developer | [William Wyatt](https://appshunter.io/developer/1071740730) | [Exam Prep OU](https://appshunter.io/developer/1689642184) |

## What reviewers say

### Lab Values Reference Guide

[App page](https://appshunter.io/ios/app/lab-values-reference-guide/id1071740731)

A quick reference tool for normal lab values and interpretation tips. It's designed for students and clinicians in medical fields, offering sorting by value, system, or panel, and includes helpful diagrams.

**Highlights:** Quick reference for normal lab values, PRO tips for interpretation, Sort by lab value, body system, or panel, Includes diagrams for quick reference, Ever-expanding content

**Features:** macOS Compatibility

**In-app purchases:** none


### FNP Mastery | Exam Prep 2026

[App page](https://appshunter.io/ios/app/fnp-mastery-exam-prep-2026/id6451448711)

Prepare for the Family Nurse Practitioner (FNP) certification exam with this comprehensive study tool. It offers an extensive question bank, customizable quizzes, detailed performance tracking, and simulated timed exams to build confidence and optimize your study plan.

**Highlights:** Extensive question bank, Multiple quiz modes, Detailed performance tracking, Study materials with explanations, Timed quizzes and mock exams, Customizable learning

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

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FNP Weekly Full Access | $12.99 | per 7 days |
| FNP Weekly Full Access | $14.99 | per 7 days |
| FNP Weekly Full Access | $16.99 | per 7 days |
| FNP Monthly Full Access | $29.99 | per month |
| FNP Monthly Free Trial 3 days | $29.99 | per month |
| FNP Monthly Full Access | $34.99 | per month |
| FNP Monthly Full Access | $34.99 | per month |
| FNP Quarterly Full Access | $55.99 | per 3 months |
| FNP Quarterly Full Access | $69.99 | per 3 months |
| FNP Semiannual Full Access | $75.99 | per 6 months |
| FNP Semiannual Full Access | $99.99 | per 6 months |
| FNP Annual Full Access | $119.99 | per year |
| FNP Annual Full Access | $139.99 | per year |


## Frequently asked questions

### Is Lab Values Reference Guide free?

Lab Values Reference Guide is free to download, with no in-app purchases.

### Is FNP Mastery | Exam Prep 2026 free?

FNP Mastery | Exam Prep 2026 is free to download, with in-app purchases available.

### Which has better reviews, Lab Values Reference Guide or FNP Mastery | Exam Prep 2026?

FNP Mastery | Exam Prep 2026 is rated higher. Lab Values Reference Guide averages 2.9 out of 5 from 9 ratings, while FNP Mastery | Exam Prep 2026 averages 4.9 from 108 ratings.

### Do Lab Values Reference Guide or FNP Mastery | Exam Prep 2026 have ads?

Neither Lab Values Reference Guide nor FNP Mastery | Exam Prep 2026 shows ads.

### Which is updated more often, Lab Values Reference Guide or FNP Mastery | Exam Prep 2026?

Lab Values Reference Guide ships an update every 7 months, and FNP Mastery | Exam Prep 2026 every 2 months. Most recently, Lab Values Reference Guide was updated on October 2, 2026 and FNP Mastery | Exam Prep 2026 on October 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.*