# サクッと情報処理安全確保支援士午前II過去問演習【サクトレ】 vs SkillStack

The clearest difference is update cadence: サクッと情報処理安全確保支援士午前II過去問演習【サクトレ】 at every 5 days against SkillStack's every 3 weeks. サクッと情報処理安全確保支援士午前II過去問演習【サクトレ】 also leads on iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. サクッと情報処理安全確保支援士午前II過去問演習【サクトレ】 sells 10 one-off in-app purchases 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.

サクッと情報処理安全確保支援士午前II過去問演習【サクトレ】 ships an update every 5 days, SkillStack every 3 weeks. The most recent releases landed on September 13, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | サクッと情報処理安全確保支援士午前II過去問演習【サクトレ】 | SkillStack |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Size | 115 MB | 50 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DECRYPTION, CO., LTD.](https://appshunter.io/developer/1778172529) | [MINATRY](https://appshunter.io/developer/1893323595) |

## What reviewers say

### サクッと情報処理安全確保支援士午前II過去問演習【サクトレ】

[App page](https://appshunter.io/ios/app/ii/id6740787769)

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 平成24年度春期&秋期問題集 | $0.29 | one-time |
| 平成29年度春期&秋期問題集 | $0.29 | one-time |
| 平成27年度春期&秋期問題集 | $0.29 | one-time |
| 平成28年度春期&秋期問題集 | $0.29 | one-time |
| 平成22年度春期&秋期問題集 | $0.29 | one-time |
| 平成26年度春期&秋期問題集 | $0.29 | one-time |
| 平成25年度春期&秋期問題集 | $0.29 | one-time |
| 平成23年度春期&秋期問題集 | $0.29 | one-time |
| 平成21年度春期&秋期問題集 | $0.29 | one-time |
| 令和6年度春期&秋期問題集 | $0.29 | one-time |


### 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 サクッと情報処理安全確保支援士午前II過去問演習【サクトレ】 free?

サクッと情報処理安全確保支援士午前II過去問演習【サクトレ】 is free to download, with in-app purchases available.

### Is SkillStack free?

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

### Do サクッと情報処理安全確保支援士午前II過去問演習【サクトレ】 or SkillStack have ads?

Neither サクッと情報処理安全確保支援士午前II過去問演習【サクトレ】 nor SkillStack shows ads.

### Which is updated more often, サクッと情報処理安全確保支援士午前II過去問演習【サクトレ】 or SkillStack?

サクッと情報処理安全確保支援士午前II過去問演習【サクトレ】 ships an update every 5 days, and SkillStack every 3 weeks. Most recently, サクッと情報処理安全確保支援士午前II過去問演習【サクトレ】 was updated on September 13, 2026 and SkillStack on October 1, 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.*