# Pi Generator vs Four Dimensional Space

The clearest difference is in-app purchases: Four Dimensional Space at none against Pi Generator's 1. Pi Generator's advantage is ads (none vs shown) and update cadence (every 10 days vs every 3 months). On price and device support there is nothing between them.

Both are free to download. Pi Generator sells 1 one-off in-app purchase. Four Dimensional Space asks for nothing beyond the download.

Pi Generator ships an update every 10 days, Four Dimensional Space every 3 months. The most recent releases landed on November 2, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Pi Generator | Four Dimensional Space |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3 ratings)](https://appshunter.io/ios/app/pi-generator/id1083533056/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 10 days** | Every 3 months |
| Monetization | Free | — |
| Size | 35 MB | 6 MB |
| Requires iOS | **15.6** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mark Duenas](https://appshunter.io/developer/1083533055) | [Toru Kawaguchi](https://appshunter.io/developer/1063198642) |

## What reviewers say

### Pi Generator

[App page](https://appshunter.io/ios/app/pi-generator/id1083533056)

This app generates a large number of pi digits, up to 100,000. It also offers a practice mode for learning pi. Test your device's capabilities with extensive pi calculations.

**Highlights:** Generates up to 10,000 digits of pi, View up to 100,000 digits, Practice learning pi, Device performance testing

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $1.99 | one-time |


### Four Dimensional Space

[App page](https://appshunter.io/ios/app/four-dimensional-space/id6762447300)

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

**In-app purchases:** none


## Frequently asked questions

### Is Pi Generator free?

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

### Is Four Dimensional Space free?

Four Dimensional Space is free to download, with no in-app purchases.

### Do Pi Generator or Four Dimensional Space have ads?

Four Dimensional Space shows ads; Pi Generator does not.

### Which is updated more often, Pi Generator or Four Dimensional Space?

Pi Generator ships an update every 10 days, and Four Dimensional Space every 3 months. Most recently, Pi Generator was updated on November 2, 2026 and Four Dimensional Space on November 9, 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.*