# KIW World vs RhythmOn

The clearest difference is update cadence: RhythmOn at fortnightly against KIW World's every 6 weeks. RhythmOn also leads on iOS requirement (15.6 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

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

KIW World ships an update every 6 weeks, RhythmOn fortnightly. The most recent releases landed on October 12, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | KIW World | RhythmOn |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Size | 28 MB | 127 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [ME WORLD PTY LTD](https://appshunter.io/developer/1537354116) | [Aahana Productions LLP](https://appshunter.io/developer/1704838192) |

## What reviewers say

### KIW World

[App page](https://appshunter.io/ios/app/kiw-world/id1537353784)

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

**In-app purchases:** none


### RhythmOn

[App page](https://appshunter.io/ios/app/rhythmon/id6463722717)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is KIW World free?

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

### Is RhythmOn free?

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

### Do KIW World or RhythmOn have ads?

Neither KIW World nor RhythmOn shows ads.

### Which is updated more often, KIW World or RhythmOn?

KIW World ships an update every 6 weeks, and RhythmOn fortnightly. Most recently, KIW World was updated on October 12, 2026 and RhythmOn on October 9, 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.*