# InsideKU vs REXX 3.0

The clearest difference is iOS requirement: REXX 3.0 at 12 against InsideKU's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

InsideKU ships an update every 6 months, REXX 3.0 every 10 months. The most recent releases landed on September 23, 2026 and April 14, 2026 respectively.

## The numbers

| Metric | InsideKU | REXX 3.0 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 10 months |
| Size | 17 MB | 92 MB |
| Requires iOS | 15.6 | **12** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kasetsart University](https://appshunter.io/developer/1350631517) | [VERNITY COMPANY LIMITED](https://appshunter.io/developer/1154404600) |

## What reviewers say

### InsideKU

[App page](https://appshunter.io/ios/app/insideku/id1097690261)

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

**In-app purchases:** none


### REXX 3.0

[App page](https://appshunter.io/ios/app/rexx-30/id6745996257)

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

**In-app purchases:** none


## Frequently asked questions

### Is InsideKU free?

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

### Is REXX 3.0 free?

REXX 3.0 is free to download, with no in-app purchases.

### Do InsideKU or REXX 3.0 have ads?

Neither InsideKU nor REXX 3.0 shows ads.

### Which is updated more often, InsideKU or REXX 3.0?

InsideKU ships an update every 6 months, and REXX 3.0 every 10 months. Most recently, InsideKU was updated on September 23, 2026 and REXX 3.0 on April 14, 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.*