# Encyclopedia vs SolarSystem

The clearest difference is rating: Encyclopedia at 3.8 against SolarSystem's 3.0. Encyclopedia also leads on ratings volume (14 vs 1). SolarSystem's advantage is in-app purchases (none vs 1) and iOS requirement (9.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Encyclopedia sells 1 one-off in-app purchase. SolarSystem asks for nothing beyond the download.

Encyclopedia holds the better App Store score, 3.8 against 3.0. That said, the two scores are not equally well evidenced: Encyclopedia has 14 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 4, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Encyclopedia | SolarSystem |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (14 ratings)](https://appshunter.io/ios/app/encyclopedia-solar-system/id1124568774/reviews)** | [3.0 (1 ratings)](https://appshunter.io/ios/app/solarsystem/id1465214287/reviews) |
| Number of ratings | **14** | 1 |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | Free with in-app purchases | **Free** |
| Size | 322 MB | 89 MB |
| Requires iOS | 15.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Good Spider, LLC](https://appshunter.io/developer/1487595667) | [Hologram Co.,Ltd.](https://appshunter.io/developer/1142940135) |

## 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 (1)**

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


### SolarSystem

[App page](https://appshunter.io/ios/app/solarsystem/id1465214287)

Explore the solar system through immersive MR, VR, and AR experiences. Adjust settings for your device and preferred viewing mode to learn about planets and space.

**Highlights:** Mixed Reality (MR) mode, Virtual Reality (VR) mode, Augmented Reality (AR) mode, Adjustable screen size, Single eye/Dual eye mode, Inter-pupillary distance correction

**In-app purchases:** none


## Frequently asked questions

### Is Encyclopedia free?

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

### Is SolarSystem free?

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

### Which has better reviews, Encyclopedia or SolarSystem?

Encyclopedia is rated higher. Encyclopedia averages 3.8 out of 5 from 14 ratings, while SolarSystem averages 3.0 from 1 ratings.

### Do Encyclopedia or SolarSystem have ads?

Neither Encyclopedia nor SolarSystem shows ads.

### Which is updated more often, Encyclopedia or SolarSystem?

Encyclopedia ships an update monthly, and SolarSystem monthly. Most recently, Encyclopedia was updated on October 4, 2026 and SolarSystem on September 23, 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.*