# Astro Viewer vs Astro!

The clearest difference is update cadence: Astro! at every 2 months against Astro Viewer's every 4 months. Astro! also leads on iOS requirement (13.0 vs 15.6). On price, ads, 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.

Astro Viewer ships an update every 4 months, Astro! every 2 months. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Astro Viewer | Astro! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (7 ratings)](https://appshunter.io/ios/app/astro/id6770999261/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 20 MB | 24 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Heebok Lee](https://appshunter.io/developer/1855773499) | [LARA NELLE SCARBOROUGH](https://appshunter.io/developer/1896768520) |

## What reviewers say

### Astro Viewer

[App page](https://appshunter.io/ios/app/astro-viewer/id6755899238)

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

**In-app purchases:** none


### Astro!

[App page](https://appshunter.io/ios/app/astro/id6770999261)

Explore the cosmos with daily NASA images and engaging facts about space. Discover stargazing tools and upcoming celestial events. Perfect for anyone curious about the universe, science, and learning new things about the night sky.

**Highlights:** Daily NASA space images, Simple explanations of celestial phenomena, Interesting astronomy facts, Stargazing tools, Upcoming space event notifications

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

**In-app purchases:** none


## Frequently asked questions

### Is Astro Viewer free?

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

### Is Astro! free?

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

### Do Astro Viewer or Astro! have ads?

Neither Astro Viewer nor Astro! shows ads.

### Which is updated more often, Astro Viewer or Astro!?

Astro Viewer ships an update every 4 months, and Astro! every 2 months. Most recently, Astro Viewer was updated on October 15, 2026 and Astro! on October 7, 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.*