# 宇宙探索大揭秘 vs Solar System Planets

The clearest difference is in-app purchases: 宇宙探索大揭秘 at none against Solar System Planets's 3. 宇宙探索大揭秘 also leads on update cadence (every 3 weeks vs every 3 months) and iOS requirement (9.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Solar System Planets sells 3 in-app purchases, starting at $9.99 per month. 宇宙探索大揭秘 asks for nothing beyond the download.

宇宙探索大揭秘 ships an update every 3 weeks, Solar System Planets every 3 months. The most recent releases landed on September 8, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 宇宙探索大揭秘 | Solar System Planets |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.3 (10 ratings)](https://appshunter.io/ios/app/solar-system-planets-3d-space/id6463002338/reviews)** |
| Number of ratings | — | **10** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | — | Free with in-app purchases |
| Size | 859 MB | 150 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Chang Chun Cinergie Cultural Industry Co., Ltd.](https://appshunter.io/developer/1145776580) | [Evgeniya Senchurova](https://appshunter.io/developer/1676838995) |

## What reviewers say

### 宇宙探索大揭秘

[App page](https://appshunter.io/ios/app/id1447576900)

**Features:** macOS Compatibility

**In-app purchases:** none


### Solar System Planets

[App page](https://appshunter.io/ios/app/solar-system-planets-3d-space/id6463002338)

Explore our solar system with interactive 3D models and detailed information about each planet. Discover celestial bodies and uncover their secrets through a user-friendly interface, perfect for students and space enthusiasts alike.

**Highlights:** Interactive 3D solar system model, High-resolution planet imagery, Detailed planet information, User-friendly interface, Educational content, Celestial body exploration

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Month Premium Access | $9.99 | per month |
| Three Months Premium Access | $19.99 | per 3 months |
| One Year Premium Access | $24.99 | per year |


## Frequently asked questions

### Is 宇宙探索大揭秘 free?

宇宙探索大揭秘 is free to download, with no in-app purchases.

### Is Solar System Planets free?

Solar System Planets is free to download, with in-app purchases available.

### Do 宇宙探索大揭秘 or Solar System Planets have ads?

Neither 宇宙探索大揭秘 nor Solar System Planets shows ads.

### Which is updated more often, 宇宙探索大揭秘 or Solar System Planets?

宇宙探索大揭秘 ships an update every 3 weeks, and Solar System Planets every 3 months. Most recently, 宇宙探索大揭秘 was updated on September 8, 2026 and Solar System Planets 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.*