# Ions 2+ vs Four Dimensional Space

The clearest difference is price: Four Dimensional Space at Free against Ions 2+'s $1.99. Four Dimensional Space also leads on update cadence (every 3 months vs every 15 months). Ions 2+'s advantage is ads (none vs shown) and iOS requirement (8.0 vs 26.2). On in-app purchases and device support there is nothing between them.

Four Dimensional Space is free to download; Ions 2+ costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Ions 2+ ships an update every 15 months, Four Dimensional Space every 3 months. The most recent releases landed on November 1, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Ions 2+ | Four Dimensional Space |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.8 (39 ratings)](https://appshunter.io/ios/app/ions-2-plus/id1025193815/reviews)** | — |
| Number of ratings | **39** | — |
| Positive reviews | 93.9% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 15 months | **Every 3 months** |
| Monetization | Paid | — |
| Size | 49 MB | 6 MB |
| Requires iOS | **8.0** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Douglas Applewhite](https://appshunter.io/developer/414602150) | [Toru Kawaguchi](https://appshunter.io/developer/1063198642) |

## What reviewers say

### Ions 2+

[App page](https://appshunter.io/ios/app/ions-2-plus/id1025193815)

Explore a dynamic particle simulation with extensive customization options. Control ion color, size, shape, and trails. Utilize device motion and advanced grid placement for unique creations. Supports a high particle count for detailed simulations.

**Highlights:** Customizable ion color and size, Shape and trail effects, Accelerometer control, Rectangular and polar grids, High particle count (up to 100,000), Save custom layouts and looks

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 Ions 2+ free?

Ions 2+ costs $1.99, with no in-app purchases.

### Is Four Dimensional Space free?

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

### Do Ions 2+ or Four Dimensional Space have ads?

Four Dimensional Space shows ads; Ions 2+ does not.

### Which is updated more often, Ions 2+ or Four Dimensional Space?

Ions 2+ ships an update every 15 months, and Four Dimensional Space every 3 months. Most recently, Ions 2+ was updated on November 1, 2026 and Four Dimensional Space on October 28, 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.*