# WRK | World Knowledge vs CAS Mock Interview

WRK | World Knowledge and CAS Mock Interview are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | WRK | World Knowledge | CAS Mock Interview |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 26 months | — |
| Size | 478 MB | 25 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Ilonka Rebergen](https://appshunter.io/developer/1703726435) | [OUTLEAP TECHNOLOGIES PRIVATE LIMITED](https://appshunter.io/developer/1544701638) |

## What reviewers say

### WRK | World Knowledge

[App page](https://appshunter.io/ios/app/wrk-world-knowledge/id6462980820)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### CAS Mock Interview

[App page](https://appshunter.io/ios/app/cas-mock-interview/id6779073303)

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

**In-app purchases:** none


## Frequently asked questions

### Is WRK | World Knowledge free?

WRK | World Knowledge is free to download, with no in-app purchases.

### Is CAS Mock Interview free?

CAS Mock Interview is free to download, with no in-app purchases.

### Do WRK | World Knowledge or CAS Mock Interview have ads?

Neither WRK | World Knowledge nor CAS Mock Interview shows ads.

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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.*