# Encyclopedia vs Planet Fun

The clearest difference is rating: Planet Fun at 4.8 against Encyclopedia's 3.8. Planet Fun also leads on in-app purchases (none vs 1) and update cadence (every 4 weeks vs every 62 months). On price, ratings volume, ads and device support there is nothing between them.

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

Planet Fun holds the better App Store score, 4.8 against 3.8. Both are backed by a comparable volume of ratings — 14 and 8 respectively.

Encyclopedia ships an update every 62 months, Planet Fun every 4 weeks. The most recent releases landed on September 3, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | Encyclopedia | Planet Fun |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (14 ratings)](https://appshunter.io/ios/app/encyclopedia-solar-system/id1124568774/reviews) | **[4.8 (8 ratings)](https://appshunter.io/ios/app/planet-fun/id1525941640/reviews)** |
| Number of ratings | **14** | 8 |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 62 months | **Every 4 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 322 MB | 161 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Good Spider, LLC](https://appshunter.io/developer/1487595667) | [Omar reis](https://appshunter.io/developer/687921629) |

## 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 |


### Planet Fun

[App page](https://appshunter.io/ios/app/planet-fun/id1525941640)

Explore a 4D solar system simulation with accurate astronomical calculations for planets, moons, and stars. Interact with the celestial bodies using touch gestures, set any date and time, and even view your GPS position in augmented reality.

**Highlights:** 4D solar system simulation, Configurable animation speed, Augmented reality mode, Almanac module with ephemeris calculators, Touch gesture controls, Star and constellation visualization

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Encyclopedia free?

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

### Is Planet Fun free?

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

### Which has better reviews, Encyclopedia or Planet Fun?

Planet Fun is rated higher. Encyclopedia averages 3.8 out of 5 from 14 ratings, while Planet Fun averages 4.8 from 8 ratings.

### Do Encyclopedia or Planet Fun have ads?

Neither Encyclopedia nor Planet Fun shows ads.

### Which is updated more often, Encyclopedia or Planet Fun?

Encyclopedia ships an update every 62 months, and Planet Fun every 4 weeks. Most recently, Encyclopedia was updated on September 3, 2026 and Planet Fun on June 4, 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.*