# The Fourth Dimension vs SayCount

The clearest difference is price: SayCount at Free against The Fourth Dimension's $2.99. SayCount also leads on update cadence (every 3 weeks vs every 4 months). The Fourth Dimension's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 26.0). On ads and device support there is nothing between them.

SayCount is free to download; The Fourth Dimension costs $2.99 up front. SayCount 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, SayCount every 3 weeks. The most recent releases landed on September 23, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | The Fourth Dimension | SayCount |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| 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 | — |
| Size | 5 MB | 8 MB |
| Requires iOS | **12.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lunar Skydiving LLC](https://appshunter.io/developer/504201786) | [JOHN MARVIN WALLEY](https://appshunter.io/developer/1864804873) |

## 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


### SayCount

[App page](https://appshunter.io/ios/app/saycount/id6757135108)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SayCount Pro | $2.99 | one-time |


## Frequently asked questions

### Is The Fourth Dimension free?

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

### Is SayCount free?

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

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

Neither The Fourth Dimension nor SayCount shows ads.

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

The Fourth Dimension ships an update every 4 months, and SayCount every 3 weeks. Most recently, The Fourth Dimension was updated on September 23, 2026 and SayCount on September 7, 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.*