# Solar System AR 4D vs Astris

The clearest difference is in-app purchases: Astris at none against Solar System AR 4D's 3. Astris also leads on update cadence (every 3 months vs every 46 months). Solar System AR 4D's advantage is iOS requirement (12.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Solar System AR 4D sells 1 one-off in-app purchase. Astris asks for nothing beyond the download.

Solar System AR 4D ships an update every 46 months, Astris every 3 months. The most recent releases landed on October 7, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Solar System AR 4D | Astris |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 46 months | **Every 3 months** |
| Size | 122 MB | 21 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ibrahim Amer](https://appshunter.io/developer/1054899889) | [ISTITUTI EDMONDO DE AMICIS SRL](https://appshunter.io/developer/1219261025) |

## What reviewers say

### Solar System AR 4D

[App page](https://appshunter.io/ios/app/solar-system-ar-4d/id1593970513)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock | $5.99 | one-time |


### Astris

[App page](https://appshunter.io/ios/app/astris/id6454899891)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Solar System AR 4D free?

Solar System AR 4D is free to download, with in-app purchases available.

### Is Astris free?

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

### Do Solar System AR 4D or Astris have ads?

Neither Solar System AR 4D nor Astris shows ads.

### Which is updated more often, Solar System AR 4D or Astris?

Solar System AR 4D ships an update every 46 months, and Astris every 3 months. Most recently, Solar System AR 4D was updated on October 7, 2026 and Astris on October 6, 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.*