# Space Interface vs Glass Aquarium

The clearest difference is in-app purchases: Space Interface at none against Glass Aquarium's 1. Space Interface also leads on iOS requirement (12.0 vs 26.0). Glass Aquarium's advantage is update cadence (every 3 months vs every 8 months). On price, ads and device support there is nothing between them.

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

Space Interface ships an update every 8 months, Glass Aquarium every 3 months. The most recent releases landed on October 4, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Space Interface | Glass Aquarium |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (1 ratings)](https://appshunter.io/ios/app/glass-aquarium/id6761319262/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 3 months** |
| Monetization | — | Free with in-app purchases |
| Size | 145 MB | 14 MB |
| Requires iOS | **12.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Haichao Zhang](https://appshunter.io/developer/1294373918) | [Nathan Mueller](https://appshunter.io/developer/1205886499) |

## What reviewers say

### Space Interface

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Glass Aquarium

[App page](https://appshunter.io/ios/app/glass-aquarium/id6761319262)

Transform your device's home screen into a dynamic, customizable aquarium. Design elegant tanks with various fish, decorations, and scenes, or engage in pet mode to care for your aquatic companions. Experience a calming, magical visual experience with interactive elements and share your creations.

**Highlights:** Customizable aquarium widgets, Variety of fish and decorations, Pet mode with fish care, Voice-activated mood setting, Time-of-day scene changes, Exportable tank images

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Glass Premium | $2.99 | one-time |


## Frequently asked questions

### Is Space Interface free?

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

### Is Glass Aquarium free?

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

### Do Space Interface or Glass Aquarium have ads?

Neither Space Interface nor Glass Aquarium shows ads.

### Which is updated more often, Space Interface or Glass Aquarium?

Space Interface ships an update every 8 months, and Glass Aquarium every 3 months. Most recently, Space Interface was updated on October 4, 2026 and Glass Aquarium on October 18, 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.*