# SkillCert vs Yabai Word

The clearest difference is update cadence: Yabai Word at every 2 days against SkillCert's every 4 days. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. SkillCert sells 3 in-app purchases, starting at $2.99 per month and Yabai Word sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

SkillCert ships an update every 4 days, Yabai Word every 2 days. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | SkillCert | Yabai Word |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 4 days | **Every 2 days** |
| Size | 155 MB | 90 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Yotaro SATO](https://appshunter.io/developer/1862063948) | [YUSAKU MIZOGAMI](https://appshunter.io/developer/6806939274) |

## What reviewers say

### 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 |


### Yabai Word

[App page](https://appshunter.io/ios/app/yabai-word/id6811827247)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $2.99 | per month |
| Premium Yearly | $19.99 | per year |


## Frequently asked questions

### Is SkillCert free?

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

### Is Yabai Word free?

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

### Do SkillCert or Yabai Word have ads?

Both SkillCert and Yabai Word show ads.

### Which is updated more often, SkillCert or Yabai Word?

SkillCert ships an update every 4 days, and Yabai Word every 2 days. Most recently, SkillCert was updated on October 25, 2026 and Yabai Word on October 31, 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.*