# Space Images vs ISS Explorer

The clearest difference is review sentiment: ISS Explorer at 100% against Space Images's 63%. ISS Explorer also leads on rating (4.9 vs 4.6) and iOS requirement (13.0 vs 17.0). Space Images's advantage is update cadence (every 4 months vs every 10 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

ISS Explorer holds the better App Store score, 4.9 against 4.6. Both are backed by a comparable volume of ratings — 16 and 16 respectively. Written reviews point the same way: 63% of Space Images's written reviews are positive against 100% of ISS Explorer's.

Space Images ships an update every 4 months, ISS Explorer every 10 months. The most recent releases landed on October 20, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Space Images | ISS Explorer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (16 ratings)](https://appshunter.io/ios/app/space-images/id347075764/reviews) | **[4.9 (16 ratings)](https://appshunter.io/ios/app/iss-explorer/id1429876038/reviews)** |
| Number of ratings | 16 | 16 |
| Positive reviews | 63.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 10 months |
| Monetization | Free | Free |
| Size | 23 MB | 747 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jet Propulsion Laboratory](https://appshunter.io/developer/347075767) | [NASA](https://appshunter.io/developer/355542146) |

## What reviewers say

### Space Images

[App page](https://appshunter.io/ios/app/space-images/id347075764)

Explore breathtaking images from NASA missions, featuring planets, galaxies, and space technology. This app offers widgets for your home screen and StandBy mode, allowing you to view a slideshow while your device charges. You can also bookmark, search, and share your favorite celestial discoveries.

**Highlights:** Latest NASA space images, Widgets for home screen, StandBy mode slideshow, Image notifications, Search and browse categories, Bookmark and share images

**Features:** macOS Compatibility

**In-app purchases:** none


### ISS Explorer

[App page](https://appshunter.io/ios/app/iss-explorer/id1429876038)

Explore a detailed 3D model of the International Space Station. Rotate, zoom, and select individual components to learn about their function and systems. Organize your view by turning parts and labels on or off.

**Highlights:** Interactive 3D ISS model, Rotate and zoom functionality, Selectable parts with isolation, Detailed information on components, Hierarchical part organization, Toggle parts and labels

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Space Images free?

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

### Is ISS Explorer free?

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

### Which has better reviews, Space Images or ISS Explorer?

ISS Explorer is rated higher. Space Images averages 4.6 out of 5 from 16 ratings, while ISS Explorer averages 4.9 from 16 ratings.

### Do Space Images or ISS Explorer have ads?

Neither Space Images nor ISS Explorer shows ads.

### Which is updated more often, Space Images or ISS Explorer?

Space Images ships an update every 4 months, and ISS Explorer every 10 months. Most recently, Space Images was updated on October 20, 2026 and ISS Explorer on October 13, 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.*