# Kids Solar System Adventure vs Smithsonian

The clearest difference is review sentiment: Smithsonian at 100% against Kids Solar System Adventure's 50%. Smithsonian also leads on price (Free vs $3.99). Kids Solar System Adventure's advantage is in-app purchases (none vs 2) and update cadence (every 2 weeks vs every 3 months). On ads and device support there is nothing between them.

Smithsonian is free to download; Kids Solar System Adventure costs $3.99 up front. Smithsonian sells 2 one-off in-app purchases. Kids Solar System Adventure asks for nothing beyond the download.

Kids Solar System Adventure ships an update every 2 weeks, Smithsonian every 3 months. The most recent releases landed on September 23, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Kids Solar System Adventure | Smithsonian |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[3.8 (5 ratings)](https://appshunter.io/ios/app/kids-solar-system-adventure/id1507857504/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 97 MB | 285 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ameer Moosa](https://appshunter.io/developer/611675070) | [PlayDate Digital](https://appshunter.io/developer/652113715) |

## 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


### Smithsonian

[App page](https://appshunter.io/ios/app/smithsonian-planets/id6504839302)

Explore the solar system with interactive games and animations. Learn fascinating facts about planets, moons, and the asteroid belt. Designed for curious young minds to introduce astronomy basics.

**Highlights:** Fascinating facts about the solar system, Mini games like Space Winter Rush, Interactive activities, Educational animations, Read to Me text, Collect planet badges

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |
| Buy 5 Planets | $2.99 | one-time |


## Frequently asked questions

### Is Kids Solar System Adventure free?

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

### Is Smithsonian free?

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

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

Neither Kids Solar System Adventure nor Smithsonian shows ads.

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

Kids Solar System Adventure ships an update every 2 weeks, and Smithsonian every 3 months. Most recently, Kids Solar System Adventure was updated on September 23, 2026 and Smithsonian on September 22, 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.*