# Kids Solar System Adventure vs Solar System Viewer

The clearest difference is rating: Solar System Viewer at 4.4 against Kids Solar System Adventure's 3.8. Solar System Viewer also leads on review sentiment (83% vs 50%) and ratings volume (28 vs 5). Kids Solar System Adventure's advantage is in-app purchases (none vs 4) and update cadence (every 2 weeks vs every 2 months). On ads, monetization model and device support there is nothing between them.

Kids Solar System Adventure costs $3.99 and Solar System Viewer $2.99 up front. Solar System Viewer sells 4 one-off in-app purchases. Kids Solar System Adventure asks for nothing beyond the download.

Solar System Viewer holds the better App Store score, 4.4 against 3.8. That said, the two scores are not equally well evidenced: Solar System Viewer has 28 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 50% of Kids Solar System Adventure's written reviews are positive against 83% of Solar System Viewer's.

Kids Solar System Adventure ships an update every 2 weeks, Solar System Viewer every 2 months. The most recent releases landed on September 23, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Kids Solar System Adventure | Solar System Viewer |
| --- | --- | --- |
| Price | $3.99 | **$2.99** |
| Rating | [3.8 (5 ratings)](https://appshunter.io/ios/app/kids-solar-system-adventure/id1507857504/reviews) | **[4.4 (28 ratings)](https://appshunter.io/ios/app/solar-system-viewer-8planets/id1554639445/reviews)** |
| Number of ratings | 5 | **28** |
| Positive reviews | 50.0% of reviews | **83.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | Paid | Paid |
| Size | 97 MB | 22 MB |
| Requires iOS | **10.0** | 26.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Ameer Moosa](https://appshunter.io/developer/611675070) | [BLUE COMET LABS LLC](https://appshunter.io/developer/1492055170) |

## What reviewers say

### Kids Solar System Adventure

[App page](https://appshunter.io/ios/app/kids-solar-system-adventure/id1507857504)

This educational game introduces young children to the solar system through interactive play. It helps toddlers learn planet names, spelling, and alphabets in multiple languages. The app features puzzles, sound effects, and customizable reading speeds for an engaging learning experience.

**Highlights:** Learn planet names and spelling, Multilingual support (6 languages), Interactive planet puzzles, Real sound effects, Customizable reading speed, Decorate planets

**Features:** macOS Compatibility

**In-app purchases:** none


### Solar System Viewer

[App page](https://appshunter.io/ios/app/solar-system-viewer-8planets/id1554639445)

Explore and simulate the orbits of planets in our solar system. This app allows you to speed up or slow down time, travel to any date, and view planetary positions. It also offers widgets for your home screen and Apple Watch complications.

**Highlights:** Simulate planetary orbits, Adjust time speed, Time travel to specific dates, Home screen widgets, Apple Watch integration, View planet overviews

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Io Tip | $1.99 | one-time |
| Europa Tip | $3.99 | one-time |
| Ganymede Tip | $5.99 | one-time |
| Callisto Tip | $9.99 | one-time |


## Frequently asked questions

### Is Kids Solar System Adventure free?

Kids Solar System Adventure costs $3.99, with no in-app purchases.

### Is Solar System Viewer free?

Solar System Viewer costs $2.99, and also offers in-app purchases.

### Which has better reviews, Kids Solar System Adventure or Solar System Viewer?

Solar System Viewer is rated higher. Kids Solar System Adventure averages 3.8 out of 5 from 5 ratings, while Solar System Viewer averages 4.4 from 28 ratings.

### Do Kids Solar System Adventure or Solar System Viewer have ads?

Neither Kids Solar System Adventure nor Solar System Viewer shows ads.

### Which is updated more often, Kids Solar System Adventure or Solar System Viewer?

Kids Solar System Adventure ships an update every 2 weeks, and Solar System Viewer every 2 months. Most recently, Kids Solar System Adventure was updated on September 23, 2026 and Solar System Viewer on September 18, 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.*