# Encyclopedia of Outer Space — Spacecraft, missions & history

> Comprehensive offline encyclopedia of outer space with HD photos and badge rewards. (iPhone/iPad app by Good Spider, LLC.)

- Source: https://appshunter.io/ios/app/encyclopedia-of-outer-space/id1122571537 (this page in markdown: same URL + `.md`)
- Developer: [Good Spider, LLC](https://appshunter.io/developer/1487595667)
- Category: Education, Books
- Price: Free with in-app purchases
- Rating: 4.60/5 from 13 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 159 MB
- Languages: American English
- Released: 2016-09-02
- Data updated: 2026-10-05
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/encyclopedia-of-outer-space/id1122571537/reviews.md

## What is Encyclopedia of Outer Space?

Explore humanity’s journeys beyond Earth through 308 illustrated articles on spacecraft, space missions, agencies, technology and exploration history.

START WITH FIVE FREE ARTICLES
New readers can choose any five different articles. Your chosen articles stay unlocked, and revisiting them never uses another choice. Existing readers keep previously granted access.

MAKE DISCOVERIES YOUR OWN
• Search article titles and full text
• Follow links between related topics
• Save articles and return to your reading position
• Continue recent reading and track your progress
• Explore connections through the timeline and graph
• Find article sources and image credits inside the app

CHOOSE YOUR ACCESS
Own the full encyclopedia with a one-time purchase for complete offline reading. Or choose monthly or annual Premium for the full encyclopedia plus AI chat grounded in this subject's articles. Eligible new Premium subscribers receive a three-day introductory trial. Subscriptions renew automatically unless canceled through your App Store account. Current local prices and terms appear before purchase.

Restore Purchases recovers eligible previous purchases. Earlier full-version ownership includes encyclopedia and offline access; Premium AI requires a subscription. Internet access is required for AI chat and purchases. AI answers may contain errors; consult the linked sources.

Article text is derived from Wikipedia. Images come from appropriately licensed Wikimedia Commons and other open sources. Source links, licenses and credits are available in the app.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Key features

- Thousands of articles and HD photos
- Comprehensive outer space information
- Simple organization and UI
- Offline access
- Badge collection for reading
- Available on iPhone and iPad

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Full Version | $2.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/encyclopedia-of-outer-space/id1122571537/reviews.md

### 3/5 — Needs full upgrade for most articles

*2023-01-26*

Please fix

## Frequently asked questions about Encyclopedia of Outer Space

### What is CHI Encyclopedia of Outer Space?

CHI Encyclopedia of Outer Space is a free educational app that provides comprehensive information about outer space through articles and HD photos. It is designed to be engaging and easy to understand for all ages.

### Can I use CHI Encyclopedia of Outer Space offline?

Yes, the encyclopedia is available entirely offline. This allows you to read about outer space on the go without needing a WiFi connection, making it convenient for travel.

### Does CHI Encyclopedia of Outer Space have ads?

No, CHI Encyclopedia of Outer Space does not contain advertisements. The app is free to download and use, with optional in-app purchases.

### How does CHI Encyclopedia of Outer Space help users learn?

It offers thousands of articles and HD photos covering outer space topics from A-Z. The app also includes a badge collection system to motivate users to read more and track their learning progress.

### What devices is CHI Encyclopedia of Outer Space compatible with?

CHI Encyclopedia of Outer Space is compatible with iPhone, iPad, and iPod. It is designed to look stunning on both iPhone and iPad devices.

### What is the age rating for CHI Encyclopedia of Outer Space?

The app has an age rating of 4+, making it suitable for children and adults interested in learning about space.

### How often is CHI Encyclopedia of Outer Space updated?

The app was last updated on September 2, 2016, with version 1.0.2. Further updates may be released to improve content or functionality.

### What are the in-app purchases for CHI Encyclopedia of Outer Space?

While the app is free, it offers in-app purchases. Specific details about these purchases, such as content unlocks or features, are not provided in the description.

## Version history (last 2 releases)

### 26.9.29 — 2026-09-29

Outer Space now uses a consistent name on your Home Screen and inside the app. Choose five free articles as a new reader, save favorites, and continue where you left off. Find clearer upgrade options and three-day Premium trials for eligible subscribers. Existing article access and eligible purchases remain protected.

### 1.0.2 — 2016-09-02

This app has been updated by Apple to display the Apple Watch app icon.

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## More apps by Good Spider, LLC

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- [Encyclopedia of Dogs](https://appshunter.io/ios/app/encyclopedia-of-dogs/id1122543308)
- [Encyclopedia: Greek Mythology](https://appshunter.io/ios/app/encyclopedia-greek-mythology/id1122556787)

All apps by Good Spider, LLC: https://appshunter.io/developer/1487595667

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-05.*