# Space Interface vs Liquid Is Fun

The clearest difference is in-app purchases: Space Interface at none against Liquid Is Fun's 1. Space Interface also leads on ads (none vs shown) and iOS requirement (12.0 vs 17.6). Liquid Is Fun's advantage is update cadence (fortnightly vs every 8 months). On price and device support there is nothing between them.

Both are free to download. Liquid Is Fun sells 1 one-off in-app purchase. Space Interface asks for nothing beyond the download.

Space Interface ships an update every 8 months, Liquid Is Fun fortnightly. The most recent releases landed on October 4, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Space Interface | Liquid Is Fun |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/liquid-is-fun/id6755490072/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | **Fortnightly** |
| Monetization | — | Free with in-app purchases |
| Size | 145 MB | 6 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Haichao Zhang](https://appshunter.io/developer/1294373918) | [Bhupesh Singh](https://appshunter.io/developer/1658100122) |

## What reviewers say

### Space Interface

[App page](https://appshunter.io/ios/app/space-interface/id1294373919)

**Features:** macOS Compatibility

**In-app purchases:** none


### Liquid Is Fun

[App page](https://appshunter.io/ios/app/liquid-is-fun/id6755490072)

Immerse yourself in a calming liquid simulation. Interact with flowing, colorful fluids to create mesmerizing patterns and reduce stress. This app offers a visually soothing experience perfect for unwinding.

**Highlights:** Realistic liquid physics, Smooth fluid movement, Multiple colors and effects, Touch-based interaction, Stress relief visuals

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium User | $3.99 | one-time |


## Frequently asked questions

### Is Space Interface free?

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

### Is Liquid Is Fun free?

Liquid Is Fun is free to download, with in-app purchases available.

### Do Space Interface or Liquid Is Fun have ads?

Liquid Is Fun shows ads; Space Interface does not.

### Which is updated more often, Space Interface or Liquid Is Fun?

Space Interface ships an update every 8 months, and Liquid Is Fun fortnightly. Most recently, Space Interface was updated on October 4, 2026 and Liquid Is Fun on October 16, 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.*