# 地学の王様 vs 潜水士 一問一答 試験対策問題集

The clearest difference is ads: 潜水士 一問一答 試験対策問題集 at none against 地学の王様's shown. 潜水士 一問一答 試験対策問題集 also leads on update cadence (every 4 days vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. 地学の王様 sells 3 in-app purchases, starting at $3.49 per month and 潜水士 一問一答 試験対策問題集 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

地学の王様 ships an update every 2 months, 潜水士 一問一答 試験対策問題集 every 4 days. The most recent releases landed on October 21, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | 地学の王様 | 潜水士 一問一答 試験対策問題集 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 75.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 138 MB | 9 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [HANAUTA INC.](https://appshunter.io/developer/492009717) | [Particles and Waves](https://appshunter.io/developer/1812653811) |

## What reviewers say

### 地学の王様

[App page](https://appshunter.io/ios/app/id1591156767)

Study geoscience through fun, quiz-like questions. This app offers over 3000 questions in various formats, ideal for quick learning sessions and exam preparation. It gamifies the learning process with stages and rewards.

**Highlights:** Over 3000 geoscience questions, Quiz-like learning format, Suitable for regular and entrance exams, Gamified progress with stages and rewards, Short play sessions for flexible study

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 特訓プラン | $3.49 | per month |
| 特訓プラン | $16.49 | per 6 months |
| 特訓プラン | $26.49 | per year |


### 潜水士 一問一答 試験対策問題集

[App page](https://appshunter.io/ios/app/id6812901669)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro (Full Unlock) | $2.99 | one-time |


## Frequently asked questions

### Is 地学の王様 free?

地学の王様 is free to download, with in-app purchases available.

### Is 潜水士 一問一答 試験対策問題集 free?

潜水士 一問一答 試験対策問題集 is free to download, with in-app purchases available.

### Do 地学の王様 or 潜水士 一問一答 試験対策問題集 have ads?

地学の王様 shows ads; 潜水士 一問一答 試験対策問題集 does not.

### Which is updated more often, 地学の王様 or 潜水士 一問一答 試験対策問題集?

地学の王様 ships an update every 2 months, and 潜水士 一問一答 試験対策問題集 every 4 days. Most recently, 地学の王様 was updated on October 21, 2026 and 潜水士 一問一答 試験対策問題集 on October 26, 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.*