# SkillCert vs SkillStack

The clearest difference is ads: SkillStack at none against SkillCert's shown. SkillCert's advantage is update cadence (every 3 days vs every 2 weeks) and iOS requirement (13.0 vs 15.0). On price, 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 SkillStack sells 7 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

SkillCert ships an update every 3 days, SkillStack every 2 weeks. The most recent releases landed on September 10, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | SkillCert | SkillStack |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Every 2 weeks |
| Size | 155 MB | 50 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Yotaro SATO](https://appshunter.io/developer/1862063948) | [MINATRY](https://appshunter.io/developer/1893323595) |

## 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 |


### SkillStack

[App page](https://appshunter.io/ios/app/skillstack-it/id6762196789)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアム（月額） | $5.99 | per month |
| プレミアム3ヶ月プラン | $17.99 | per 3 months |
| プレミアム（年額） | $59.99 | per year |
| AIクレジット お試し | $1.99 | one-time |
| AIクレジット スタンダード | $2.99 | one-time |
| AIクレジット お得 | $5.99 | one-time |
| AIクレジット プロ | $11.99 | one-time |


## Frequently asked questions

### Is SkillCert free?

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

### Is SkillStack free?

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

### Do SkillCert or SkillStack have ads?

SkillCert shows ads; SkillStack does not.

### Which is updated more often, SkillCert or SkillStack?

SkillCert ships an update every 3 days, and SkillStack every 2 weeks. Most recently, SkillCert was updated on September 10, 2026 and SkillStack on September 13, 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.*