# The Fourth Dimension vs Graph³

The clearest difference is in-app purchases: The Fourth Dimension at none against Graph³'s 1. Graph³'s advantage is update cadence (every 3 weeks vs every 4 months) and chart position (#200 vs unranked). On ads and device support there is nothing between them.

The Fourth Dimension costs $2.99 and Graph³ $0.99 up front. Graph³ sells 1 one-off in-app purchase. The Fourth Dimension asks for nothing beyond the download.

The Fourth Dimension ships an update every 4 months, Graph³ every 3 weeks. The most recent releases landed on October 13, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | The Fourth Dimension | Graph³ |
| --- | --- | --- |
| Price | $2.99 | **$0.99** |
| Rating | **[4.8 (1.9K ratings)](https://appshunter.io/ios/app/the-fourth-dimension/id504201783/reviews)** | — |
| Number of ratings | **1.9K** | — |
| Positive reviews | 94.2% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | — | **#200** |
| Size | 5 MB | 10 MB |
| Requires iOS | 12.0 | **9.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Lunar Skydiving LLC](https://appshunter.io/developer/504201786) | [Norbert Grieger](https://appshunter.io/developer/1437060665) |

## What reviewers say

### The Fourth Dimension

[App page](https://appshunter.io/ios/app/the-fourth-dimension/id504201783)

Explore a complex mathematical concept through an interactive 3D experience. This app uses a unique touch interface to help you visualize and understand the fourth dimension in an engaging and accessible way.

**Highlights:** Interactive 3D touch interface, Explains the fourth dimension, Accessible language for all, 30-page interactive book, Visual and hands-on learning

**In-app purchases:** none


### Graph³

[App page](https://appshunter.io/ios/app/graph/id1437807952)

**Currently charting:** #200 Top Paid · Education (US App Store)

Visualize mathematical functions in 2D and 3D with over 24 built-in functions. Automatically detect special points, customize settings for each function, and save your work. Ideal for students and math enthusiasts.

**Highlights:** 2D and 3D function display, Over 24 mathematical functions, Automatic detection of special points, Customizable function settings, Save and load scenes, Value table for function analysis

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3D Graph | $0.99 | one-time |


## Frequently asked questions

### Is The Fourth Dimension free?

The Fourth Dimension costs $2.99, with no in-app purchases.

### Is Graph³ free?

Graph³ costs $0.99, and also offers in-app purchases.

### Do The Fourth Dimension or Graph³ have ads?

Neither The Fourth Dimension nor Graph³ shows ads.

### Which is updated more often, The Fourth Dimension or Graph³?

The Fourth Dimension ships an update every 4 months, and Graph³ every 3 weeks. Most recently, The Fourth Dimension was updated on October 13, 2026 and Graph³ on October 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.*