# Astris vs Solar System&Celestial Objects

The clearest difference is ads: Astris at none against Solar System&Celestial Objects's shown. Solar System&Celestial Objects's advantage is iOS requirement (12.0 vs 15.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Astris ships an update every 3 months, Solar System&Celestial Objects every 6 weeks. The most recent releases landed on September 27, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Astris | Solar System&Celestial Objects |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Size | 21 MB | 62 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ISTITUTI EDMONDO DE AMICIS SRL](https://appshunter.io/developer/1219261025) | [NIKI TECH](https://appshunter.io/developer/1788609104) |

## What reviewers say

### Astris

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Solar System&Celestial Objects

[App page](https://appshunter.io/ios/app/solar-system-and-celestial-objects/id6503188651)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Astris free?

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

### Is Solar System&Celestial Objects free?

Solar System&Celestial Objects is free to download, with no in-app purchases.

### Do Astris or Solar System&Celestial Objects have ads?

Solar System&Celestial Objects shows ads; Astris does not.

### Which is updated more often, Astris or Solar System&Celestial Objects?

Astris ships an update every 3 months, and Solar System&Celestial Objects every 6 weeks. Most recently, Astris was updated on September 27, 2026 and Solar System&Celestial Objects on September 14, 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.*