# Encyclopedia vs Space & the Solar System Lite

The clearest difference is review sentiment: Encyclopedia at 83% against Space & the Solar System Lite's 40%. Encyclopedia also leads on rating (3.8 vs 3.1) and ads (none vs shown). Space & the Solar System Lite's advantage is in-app purchases (none vs 3) and iOS requirement (7.0 vs 15.0). On price, ratings volume and device support there is nothing between them.

Both are free to download. Encyclopedia sells 3 in-app purchases, starting at $2.99 per month. Space & the Solar System Lite asks for nothing beyond the download.

Encyclopedia holds the better App Store score, 3.8 against 3.1. Both are backed by a comparable volume of ratings — 14 and 8 respectively. Written reviews point the same way: 83% of Encyclopedia's written reviews are positive against 40% of Space & the Solar System Lite's.

Encyclopedia ships an update every 3 weeks, Space & the Solar System Lite every 4 months. Both last shipped on November 2, 2026.

## The numbers

| Metric | Encyclopedia | Space & the Solar System Lite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (14 ratings)](https://appshunter.io/ios/app/encyclopedia-solar-system/id1124568774/reviews)** | [3.1 (8 ratings)](https://appshunter.io/ios/app/space-and-the-solar-system-lite/id1449215320/reviews) |
| Number of ratings | **14** | 8 |
| Positive reviews | **83.3% of reviews** | 40.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 496 MB | 185 MB |
| Requires iOS | 15.0 | **7.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Good Spider, LLC](https://appshunter.io/developer/1487595667) | [Chengdu Bosijie Technology LLC.](https://appshunter.io/developer/1437710910) |

## What reviewers say

### Encyclopedia

[App page](https://appshunter.io/ios/app/encyclopedia-solar-system/id1124568774)

Explore the solar system with extensive articles and high-definition images. This app offers comprehensive information, engaging content, and a user-friendly interface, making it suitable for both children and adults interested in space.

**Highlights:** Thousands of articles and HD photos, Comprehensive solar system information, Engaging and easy-to-understand content, Offline availability, Badge collection for reading, Intuitive user interface

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $2.99 | per month |
| Annual Premium | $19.99 | per year |
| Full Version | $9.99 | one-time |


### Space & the Solar System Lite

[App page](https://appshunter.io/ios/app/space-and-the-solar-system-lite/id1449215320)

Explore the cosmos with interactive games and fun facts about planets, stars, and galaxies. This app helps children independently master space knowledge and satisfy their curiosity about the universe.

**Highlights:** Interactive educational games, Fun space facts, Learn about planets and celestial bodies, Planet positioning and movement, Over 100 space nouns, Independent learning through play

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Encyclopedia free?

Encyclopedia is free to download, with in-app purchases available.

### Is Space & the Solar System Lite free?

Space & the Solar System Lite is free to download, with no in-app purchases.

### Which has better reviews, Encyclopedia or Space & the Solar System Lite?

Encyclopedia is rated higher. Encyclopedia averages 3.8 out of 5 from 14 ratings, while Space & the Solar System Lite averages 3.1 from 8 ratings.

### Do Encyclopedia or Space & the Solar System Lite have ads?

Space & the Solar System Lite shows ads; Encyclopedia does not.

### Which is updated more often, Encyclopedia or Space & the Solar System Lite?

Encyclopedia ships an update every 3 weeks, and Space & the Solar System Lite every 4 months. Most recently, Encyclopedia was updated on November 2, 2026 and Space & the Solar System Lite on November 2, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*