# SC vs AI

The clearest difference is in-app purchases: SC at none against AI's 3. SC also leads on ads (none vs shown). AI's advantage is update cadence (every 3 weeks vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. AI sells 3 one-off in-app purchases. SC asks for nothing beyond the download.

SC ships an update every 2 months, AI every 3 weeks. The most recent releases landed on October 4, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | SC | AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 26 MB | 184 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Davy Raitt](https://appshunter.io/developer/1795318281) | [合同会社HopStep](https://appshunter.io/developer/1749721044) |

## What reviewers say

### SC

[App page](https://appshunter.io/ios/app/sc-900-study-buddy-security/id6748069788)

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

**In-app purchases:** none


### AI

[App page](https://appshunter.io/ios/app/ai-901-study-and-practice/id6759863242)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Complete Pack - Sale | $5.99 | one-time |
| Complete Pack | $9.99 | one-time |
| Lifetime Premium | $11.99 | one-time |


## Frequently asked questions

### Is SC free?

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

### Is AI free?

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

### Do SC or AI have ads?

AI shows ads; SC does not.

### Which is updated more often, SC or AI?

SC ships an update every 2 months, and AI every 3 weeks. Most recently, SC was updated on October 4, 2026 and AI on October 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.*