# Koro AI vs Shale

The clearest difference is in-app purchases: Koro AI at none against Shale's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Shale sells 3 in-app purchases, starting at $2.99 per 7 days. Koro AI asks for nothing beyond the download.

Koro AI ships an update every 5 days, Shale every 4 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | Koro AI | Shale |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 4 days** |
| Monetization | Freemium | — |
| Size | 18 MB | 59 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Koro AI](https://appshunter.io/developer/6786231502) | [Elias Leinonen](https://appshunter.io/developer/1893625652) |

## What reviewers say

### Koro AI

[App page](https://appshunter.io/ios/app/koro-ai-study-notes-and-prep/id6786231499)

Transform any course material into study aids like summaries, flashcards, and quizzes. This app guides your revision with a personalized study path, helping you learn faster and retain more information for exams.

**Highlights:** Instant summaries from documents, Auto-generated flashcards, Custom quiz mode, Ask questions about concepts, Personalized study path, Supports various document types

**Features:** macOS Compatibility

**In-app purchases:** none


### Shale

[App page](https://appshunter.io/ios/app/shale-block-and-study/id6799409520)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Shale Pro Weekly | $2.99 | per 7 days |
| Shale Annual Plan | $34.99 | per year |
| Shale Pro Lifetime | $99.99 | one-time |


## Frequently asked questions

### Is Koro AI free?

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

### Is Shale free?

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

### Do Koro AI or Shale have ads?

Neither Koro AI nor Shale shows ads.

### Which is updated more often, Koro AI or Shale?

Koro AI ships an update every 5 days, and Shale every 4 days. Most recently, Koro AI was updated on October 31, 2026 and Shale 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.*