# Our Solar System vs 더책

The clearest difference is review sentiment: 더책 at 20% against Our Solar System's 0%. Our Solar System's advantage is update cadence (every 6 weeks vs every 4 months) and iOS requirement (8.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Our Solar System ships an update every 6 weeks, 더책 every 4 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Our Solar System | 더책 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/our-solar-system/id1222838950/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 0.0% of reviews | **20.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 4 months |
| Monetization | Free | — |
| Size | 770 MB | 6 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alzzam Education Corp.](https://appshunter.io/developer/868032382) | [Media Changbi, Inc.](https://appshunter.io/developer/1491869902) |

## What reviewers say

### Our Solar System

[App page](https://appshunter.io/ios/app/our-solar-system/id1222838950)

Explore planets and probes in augmented reality, virtual reality, and hologram modes. This app provides detailed information about celestial bodies within our solar system.

**Highlights:** Augmented reality planet and probe exploration, Virtual reality solar system view, Hologram mode for celestial body information, Detailed planet and probe data, Interactive educational content

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### 더책

[App page](https://appshunter.io/ios/app/id1491869903)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Our Solar System free?

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

### Is 더책 free?

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

### Do Our Solar System or 더책 have ads?

Neither Our Solar System nor 더책 shows ads.

### Which is updated more often, Our Solar System or 더책?

Our Solar System ships an update every 6 weeks, and 더책 every 4 months. Most recently, Our Solar System was updated on November 2, 2026 and 더책 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.*