# DIY Solar System vs Tuning Fork Study

The clearest difference is price: DIY Solar System at Free against Tuning Fork Study's $1.99. DIY Solar System also leads on update cadence (every 2 months vs every 37 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

DIY Solar System is free to download; Tuning Fork Study costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

DIY Solar System ships an update every 2 months, Tuning Fork Study every 37 months. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | DIY Solar System | Tuning Fork Study |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.5 (17 ratings)](https://appshunter.io/ios/app/diy-solar-system/id1644242890/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 37 months |
| Monetization | Free | — |
| Size | 180 MB | 224 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [The Lawrence Hall of Science](https://appshunter.io/developer/462994550) | [VIRTUAL FILAMENTS PRIVATE LIMITED](https://appshunter.io/developer/1474217212) |

## What reviewers say

### DIY Solar System

[App page](https://appshunter.io/ios/app/diy-solar-system/id1644242890)

Explore the solar system with interactive activities and an augmented reality planet walk. Learn about space travel, design a moon base, and identify celestial objects. Developed by leading science institutions, this app makes learning about space engaging for families and educators.

**Highlights:** Interactive space activities, Augmented reality planet walk, Design a moon base, Grow a space garden, Control a Mars rover, In or Out space game, NASA imagery

**Features:** macOS Compatibility

**In-app purchases:** none


### Tuning Fork Study

[App page](https://appshunter.io/ios/app/tuning-fork-study-edutech-era/id6444695848)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DIY Solar System free?

DIY Solar System is free to download, with no in-app purchases.

### Is Tuning Fork Study free?

Tuning Fork Study costs $1.99, with no in-app purchases.

### Do DIY Solar System or Tuning Fork Study have ads?

Neither DIY Solar System nor Tuning Fork Study shows ads.

### Which is updated more often, DIY Solar System or Tuning Fork Study?

DIY Solar System ships an update every 2 months, and Tuning Fork Study every 37 months. Most recently, DIY Solar System was updated on October 24, 2026 and Tuning Fork Study on October 10, 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.*