# Encyclopedia vs 3D Solar System Tour

The clearest difference is ads: Encyclopedia at none against 3D Solar System Tour's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Encyclopedia sells 1 one-off in-app purchase and 3D Solar System Tour sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 24, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Encyclopedia | 3D Solar System Tour |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (14 ratings)](https://appshunter.io/ios/app/encyclopedia-solar-system/id1124568774/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 496 MB | 74 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Good Spider, LLC](https://appshunter.io/developer/1487595667) | [Takashi Imamura](https://appshunter.io/developer/1801902689) |

## 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 |


### 3D Solar System Tour

[App page](https://appshunter.io/ios/app/3d-solar-system-tour/id6755645976)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Plan | $5.00 | one-time |


## Frequently asked questions

### Is Encyclopedia free?

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

### Is 3D Solar System Tour free?

3D Solar System Tour is free to download, with in-app purchases available.

### Do Encyclopedia or 3D Solar System Tour have ads?

3D Solar System Tour shows ads; Encyclopedia does not.

### Which is updated more often, Encyclopedia or 3D Solar System Tour?

Encyclopedia ships an update every 3 weeks, and 3D Solar System Tour every 3 weeks. Most recently, Encyclopedia was updated on October 24, 2026 and 3D Solar System Tour on October 6, 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.*