# Knowledge Hub Pro vs Casty

The clearest difference is update cadence: Casty at every 2 days against Knowledge Hub Pro's monthly. Knowledge Hub Pro's advantage is iOS requirement (9.0 vs 15.1). On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for Knowledge Hub Pro against 5.0 for Casty. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Knowledge Hub Pro ships an update monthly, Casty every 2 days. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Knowledge Hub Pro | Casty |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/knowledge-hub-pro/id1477584908/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/casty/id6740439860/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 days** |
| Monetization | Free | Free |
| Size | 47 MB | 23 MB |
| Requires iOS | **9.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MIT iOS APP](https://appshunter.io/developer/1167867475) | [Wai Yip Li](https://appshunter.io/developer/1789980681) |

## What reviewers say

### Knowledge Hub Pro

[App page](https://appshunter.io/ios/app/knowledge-hub-pro/id1477584908)

Access a wide range of online courses on your mobile device to acquire new skills. Watch course videos offline, engage in discussions, and test your knowledge with quizzes.

**Highlights:** View enrolled courses, Discover new courses, Download videos for offline viewing, Discussion topics, Quizzes with answers

**Features:** macOS Compatibility

**In-app purchases:** none


### Casty

[App page](https://appshunter.io/ios/app/casty/id6740439860)

Transform PDF documents into engaging podcasts with live transcripts and a built-in dictionary. Listen offline to educational content in Japanese or English after generation.

**Highlights:** Convert PDFs to podcasts, Live transcripts, Built-in dictionary, Offline listening, Japanese and English support

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Knowledge Hub Pro free?

Knowledge Hub Pro is free to download, with no in-app purchases.

### Is Casty free?

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

### Which has better reviews, Knowledge Hub Pro or Casty?

Knowledge Hub Pro and Casty are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Knowledge Hub Pro or Casty have ads?

Neither Knowledge Hub Pro nor Casty shows ads.

### Which is updated more often, Knowledge Hub Pro or Casty?

Knowledge Hub Pro ships an update monthly, and Casty every 2 days. Most recently, Knowledge Hub Pro was updated on November 3, 2026 and Casty on November 4, 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.*