# What's in Space? vs 惑星AR

The clearest difference is review sentiment: 惑星AR at 100% against What's in Space?'s 52%. 惑星AR also leads on in-app purchases (none vs 4). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. What's in Space? sells 4 in-app purchases, starting at $7.99 per month. 惑星AR asks for nothing beyond the download.

What's in Space? ships an update every 4 months, 惑星AR every 7 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | What's in Space? | 惑星AR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (213 ratings)](https://appshunter.io/ios/app/whats-in-space/id1350735095/reviews)** | — |
| Number of ratings | **213** | — |
| Positive reviews | 52.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 7 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 447 MB | 81 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Learny Land](https://appshunter.io/developer/1380183676) | [Thunderbird, Inc.](https://appshunter.io/developer/1066532988) |

## What reviewers say

### What's in Space?

[App page](https://appshunter.io/ios/app/whats-in-space/id1350735095)

Explore the wonders of space with engaging games and animations designed for children. Learn about planets, stars, astronauts, and rockets through interactive activities and narrated content. This app offers a fun and safe way for kids to discover the solar system and beyond.

**Highlights:** Discover the Solar System and planets, Learn about astronauts and space travel, Explore constellations and stars, Build your own spaceship, Educational games with no time limits, Completely narrated content

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Learny Land Pass - Monthly | $7.99 | per month |
| Learny Land Pass - Monthly | $8.99 | per month |
| Learny Land Pass - Annual | $39.99 | per year |
| Learny Land Pass - Annual | $49.99 | per year |


### 惑星AR

[App page](https://appshunter.io/ios/app/ar/id1575645390)

Explore the solar system with interactive visualizations. Understand planetary sizes and distances through intuitive modes, and learn fascinating facts with quizzes. Ideal for grasping astronomical concepts visually.

**Highlights:** Size comparison mode, Distance comparison mode, Orbit visualization, Interactive 3D manipulation, Detailed planet information, Quiz-based trivia

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is What's in Space? free?

What's in Space? is free to download, with in-app purchases available.

### Is 惑星AR free?

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

### Do What's in Space? or 惑星AR have ads?

Neither What's in Space? nor 惑星AR shows ads.

### Which is updated more often, What's in Space? or 惑星AR?

What's in Space? ships an update every 4 months, and 惑星AR every 7 months. Most recently, What's in Space? was updated on November 6, 2026 and 惑星AR on November 3, 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.*