# s＊カルク vs AI Tutor

The clearest difference is ads: s＊カルク at none against AI Tutor's shown. AI Tutor's advantage is update cadence (daily vs every 5 days). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

s＊カルク ships an update every 5 days, AI Tutor daily. The most recent releases landed on October 13, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | s＊カルク | AI Tutor |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 days | **Daily** |
| Size | 0 MB | 74 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Seigo Mizouchi](https://appshunter.io/developer/1880010064) | [Manh Toan Nguyen](https://appshunter.io/developer/540761762) |

## What reviewers say

### s＊カルク

[App page](https://appshunter.io/ios/app/s/id6759860921)

**Features:** macOS Compatibility

**In-app purchases:** none


### AI Tutor

[App page](https://appshunter.io/ios/app/ai-tutor-learn-better/id6809510023)

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

**In-app purchases:** none


## Frequently asked questions

### Is s＊カルク free?

s＊カルク is free to download, with no in-app purchases.

### Is AI Tutor free?

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

### Do s＊カルク or AI Tutor have ads?

AI Tutor shows ads; s＊カルク does not.

### Which is updated more often, s＊カルク or AI Tutor?

s＊カルク ships an update every 5 days, and AI Tutor daily. Most recently, s＊カルク was updated on October 13, 2026 and AI Tutor on October 19, 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.*