# Spaceship Earth vs 情報の王様

The clearest difference is in-app purchases: Spaceship Earth at none against 情報の王様's 3. Spaceship Earth also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. 情報の王様 sells 3 in-app purchases, starting at $1.99 per month. Spaceship Earth asks for nothing beyond the download.

Spaceship Earth ships an update every 2 months, 情報の王様 every 6 weeks. The most recent releases landed on October 12, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Spaceship Earth | 情報の王様 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 85.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 55 MB | 138 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Erevista Inc.](https://appshunter.io/developer/1475885966) | [HANAUTA INC.](https://appshunter.io/developer/492009717) |

## What reviewers say

### Spaceship Earth

[App page](https://appshunter.io/ios/app/spaceship-earth-sdgs/id1613446452)

**Features:** Vision Pro support

**In-app purchases:** none


### 情報の王様

[App page](https://appshunter.io/ios/app/1/id6467608924)

Master high school information studies with this quiz-style app. It offers over 1000 questions in Q&A and multiple-choice formats, perfect for quick study sessions, exam preparation, and reinforcing key concepts. Enjoy a game-like experience with rewards for clearing stages.

**Highlights:** Over 1000 Q&A and multiple-choice questions, Short play sessions for flexible study, Covers high school and university exam material, Game-like progression with stage clearing, Gift rewards for completing quests, Efficient memorization of key points

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 特訓プラン | $1.99 | per month |
| 特訓プラン | $11.99 | per 6 months |
| 特訓プラン | $19.99 | per year |


## Frequently asked questions

### Is Spaceship Earth free?

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

### Is 情報の王様 free?

情報の王様 is free to download, with in-app purchases available.

### Do Spaceship Earth or 情報の王様 have ads?

情報の王様 shows ads; Spaceship Earth does not.

### Which is updated more often, Spaceship Earth or 情報の王様?

Spaceship Earth ships an update every 2 months, and 情報の王様 every 6 weeks. Most recently, Spaceship Earth was updated on October 12, 2026 and 情報の王様 on October 2, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*