# Arloon Solar System vs Encyclopedia

The clearest difference is review sentiment: Encyclopedia at 83% against Arloon Solar System's 0%. Encyclopedia also leads on price (Free vs $2.99) and rating (3.8 vs 2.3). Arloon Solar System's advantage is in-app purchases (none vs 1) and iOS requirement (9.0 vs 15.0). On ads and device support there is nothing between them.

Encyclopedia is free to download; Arloon Solar System costs $2.99 up front. Encyclopedia sells 1 one-off in-app purchase. Arloon Solar System asks for nothing beyond the download.

Encyclopedia holds the better App Store score, 3.8 against 2.3. Both are backed by a comparable volume of ratings — 3 and 14 respectively. Written reviews point the same way: 0% of Arloon Solar System's written reviews are positive against 83% of Encyclopedia's.

Arloon Solar System ships an update every 3 months, Encyclopedia every 3 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | Arloon Solar System | Encyclopedia |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [2.3 (3 ratings)](https://appshunter.io/ios/app/arloon-solar-system/id972569888/reviews) | **[3.8 (14 ratings)](https://appshunter.io/ios/app/encyclopedia-solar-system/id1124568774/reviews)** |
| Number of ratings | 3 | **14** |
| Positive reviews | 0.0% of reviews | **83.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 297 MB | 496 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | +4 | 4+ |
| Developer | [WANT2B S.L.](https://appshunter.io/developer/1123707383) | [Good Spider, LLC](https://appshunter.io/developer/1487595667) |

## What reviewers say

### Arloon Solar System

[App page](https://appshunter.io/ios/app/arloon-solar-system/id972569888)

Explore the solar system and Earth's phenomena through interactive 3D models and engaging activities. This app is designed for students aged 6-13 to foster understanding of astronomy and space concepts.

**Highlights:** Interactive 3D solar system models, Augmented Reality exploration, Explanations of celestial bodies, Earth's rotation, translation, and seasons, Moon phases and eclipses, Self-correcting quizzes, Multilingual support

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 (1)**

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


## Frequently asked questions

### Is Arloon Solar System free?

Arloon Solar System costs $2.99, with no in-app purchases.

### Is Encyclopedia free?

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

### Which has better reviews, Arloon Solar System or Encyclopedia?

Encyclopedia is rated higher. Arloon Solar System averages 2.3 out of 5 from 3 ratings, while Encyclopedia averages 3.8 from 14 ratings.

### Do Arloon Solar System or Encyclopedia have ads?

Neither Arloon Solar System nor Encyclopedia shows ads.

### Which is updated more often, Arloon Solar System or Encyclopedia?

Arloon Solar System ships an update every 3 months, and Encyclopedia every 3 weeks. Most recently, Arloon Solar System was updated on October 24, 2026 and Encyclopedia on October 24, 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.*