# VOCA vs Cert Rogue 知識のダンジョン

The clearest difference is in-app purchases: VOCA at none against Cert Rogue 知識のダンジョン's 8. VOCA also leads on update cadence (every 9 days vs every 3 weeks). Cert Rogue 知識のダンジョン's advantage is iOS requirement (13.0 vs 18.6). On price, ads and device support there is nothing between them.

Both are free to download. Cert Rogue 知識のダンジョン sells 8 one-off in-app purchases. VOCA asks for nothing beyond the download.

VOCA ships an update every 9 days, Cert Rogue 知識のダンジョン every 3 weeks. The most recent releases landed on October 21, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | VOCA | Cert Rogue 知識のダンジョン |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/voca/id6760336263/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 3 weeks |
| Monetization | Free | — |
| Size | 8 MB | 26 MB |
| Requires iOS | 18.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ryotaro Yogo](https://appshunter.io/developer/1883955608) | [TAKESHI TAMEGAI](https://appshunter.io/developer/1896333216) |

## What reviewers say

### VOCA

[App page](https://appshunter.io/ios/app/voca/id6760336263)

Compete in real-time English vocabulary battles against players worldwide. This app transforms vocabulary memorization into an engaging game, enhancing practical English skills through rapid output and competitive challenges.

**Highlights:** Real-time 1v1 vocabulary battles, Customizable multiplayer battles (2-10 players), Daily challenge with increasing difficulty, User profiles with custom names and icons, Friend system for competitive rankings, Focus on practical English output

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

**In-app purchases:** none


### Cert Rogue 知識のダンジョン

[App page](https://appshunter.io/ios/app/cert-rogue/id6772684520)

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 世界史ダンジョン(歴検3級) | $1.99 | one-time |
| ITパスポート ダンジョン | $1.99 | one-time |
| 麻雀ダンジョン(役・点数計算) | $1.99 | one-time |
| AI-102 ダンジョン | $1.99 | one-time |
| 世界遺産検定2級 ダンジョン | $1.99 | one-time |
| 世界遺産検定1級 ダンジョン | $1.99 | one-time |
| 世界史ダンジョン(歴検2級) | $1.99 | one-time |
| 競馬データダンジョン | $1.99 | one-time |


## Frequently asked questions

### Is VOCA free?

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

### Is Cert Rogue 知識のダンジョン free?

Cert Rogue 知識のダンジョン is free to download, with in-app purchases available.

### Do VOCA or Cert Rogue 知識のダンジョン have ads?

Neither VOCA nor Cert Rogue 知識のダンジョン shows ads.

### Which is updated more often, VOCA or Cert Rogue 知識のダンジョン?

VOCA ships an update every 9 days, and Cert Rogue 知識のダンジョン every 3 weeks. Most recently, VOCA was updated on October 21, 2026 and Cert Rogue 知識のダンジョン on October 25, 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.*