# GraphNCalc83 vs Lab Values Reference Guide

The clearest difference is price: Lab Values Reference Guide at Free against GraphNCalc83's $12.99. Lab Values Reference Guide also leads on iOS requirement (9.3 vs 15.6). GraphNCalc83's advantage is rating (4.9 vs 3.1) and ratings volume (4K vs 10). On update cadence, ads, in-app purchases and device support there is nothing between them.

Lab Values Reference Guide is free to download; GraphNCalc83 costs $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

GraphNCalc83 holds the better App Store score, 4.9 against 3.1. That said, the two scores are not equally well evidenced: GraphNCalc83 has 4K ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 98% of GraphNCalc83's written reviews are positive against 89% of Lab Values Reference Guide's.

GraphNCalc83 ships an update every 5 months, Lab Values Reference Guide every 7 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | GraphNCalc83 | Lab Values Reference Guide |
| --- | --- | --- |
| Price | $12.99 | **Free** |
| Rating | **[4.9 (4K ratings)](https://appshunter.io/ios/app/graphncalc83/id744882019/reviews)** | [3.1 (10 ratings)](https://appshunter.io/ios/app/lab-values-reference-guide/id1071740731/reviews) |
| Number of ratings | **4K** | 10 |
| Positive reviews | **98.2% of reviews** | 88.9% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 7 months |
| Monetization | Paid | **Free** |
| Best chart rank | **#127** | — |
| Size | 10 MB | 27 MB |
| Requires iOS | 15.6 | **9.3** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Ernest Brock](https://appshunter.io/developer/289555912) | [William Wyatt](https://appshunter.io/developer/1071740730) |

## What reviewers say

### GraphNCalc83

[App page](https://appshunter.io/ios/app/graphncalc83/id744882019)

**Currently charting:** #127 Top Paid · Education (US App Store)

This app offers a powerful graphing calculator experience with touch-based input for enhanced interaction. It supports natural textbook notation, advanced math functions, and various plotting capabilities.  Users can also utilize its programming features and built-in tools like unit conversion and a periodic table.

**Highlights:** Touch-based graphing and editing, Natural textbook notation input, Advanced math and statistical functions, Parametric, polar, and f(x,y) equation graphing, BASIC programming with fast execution, Unit converter and physical constants, Interactive periodic table

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

**In-app purchases:** none

**What reviewers like**

- 👍 Familiar TI-83/84 calculator interface
- 🚀 Powerful and feature-rich
- 💡 Touchscreen enhancements like zooming and tracing
- 👍 Convenient to have a graphing calculator on your phone
- 👍 Frequent updates and great developer support

**What reviewers complain about**

- 🐛 Occasional issues with graph rendering and zooming
- ⚠️ Not allowed to use on tests/exams like physical calculators

**Reported bugs**

- Occasional crashes or freezes
- Inconsistent behavior when scrolling through calculation history

**Requested features**

- Dark mode or customizable themes
- More advanced programming and scripting capabilities
- Support for additional calculator models (e.g., TI-89)


### 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


## Frequently asked questions

### Is GraphNCalc83 free?

GraphNCalc83 costs $12.99, with no in-app purchases.

### Is Lab Values Reference Guide free?

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

### Which has better reviews, GraphNCalc83 or Lab Values Reference Guide?

GraphNCalc83 is rated higher. GraphNCalc83 averages 4.9 out of 5 from 4K ratings, while Lab Values Reference Guide averages 3.1 from 10 ratings.

### Do GraphNCalc83 or Lab Values Reference Guide have ads?

Neither GraphNCalc83 nor Lab Values Reference Guide shows ads.

### Which is updated more often, GraphNCalc83 or Lab Values Reference Guide?

GraphNCalc83 ships an update every 5 months, and Lab Values Reference Guide every 7 months. Most recently, GraphNCalc83 was updated on October 26, 2026 and Lab Values Reference Guide on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*