# モグモグ英単語Z vs SkillCert

The clearest difference is in-app purchases: モグモグ英単語Z at none against SkillCert's 3. モグモグ英単語Z 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. SkillCert sells 3 in-app purchases, starting at $2.99 per month. モグモグ英単語Z asks for nothing beyond the download.

モグモグ英単語Z ships an update weekly, SkillCert every 3 days. The most recent releases landed on September 5, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | モグモグ英単語Z | SkillCert |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Weekly | **Every 3 days** |
| Size | 41 MB | 155 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [ryoichi michibata](https://appshunter.io/developer/1835272057) | [Yotaro SATO](https://appshunter.io/developer/1862063948) |

## What reviewers say

### モグモグ英単語Z

[App page](https://appshunter.io/ios/app/z/id6751471056)

**Features:** macOS Compatibility

**In-app purchases:** none


### SkillCert

[App page](https://appshunter.io/ios/app/skillcert-mostcertifications/id6756679793)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SKILL Cert by AI ライトプラン | $2.99 | per month |
| SKILL Cert by AI スタンダードプラン | $9.99 | per month |
| SKILL Cert by AI プレミアムプラン | $29.99 | per month |


## Frequently asked questions

### Is モグモグ英単語Z free?

モグモグ英単語Z is free to download, with no in-app purchases.

### Is SkillCert free?

SkillCert is free to download, with in-app purchases available.

### Do モグモグ英単語Z or SkillCert have ads?

SkillCert shows ads; モグモグ英単語Z does not.

### Which is updated more often, モグモグ英単語Z or SkillCert?

モグモグ英単語Z ships an update weekly, and SkillCert every 3 days. Most recently, モグモグ英単語Z was updated on September 5, 2026 and SkillCert on September 10, 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.*