# World Controller vs Harmonizer

The clearest difference is update cadence: Harmonizer at every 2 months against World Controller's every 6 months. World Controller's advantage is iOS requirement (12 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.

World Controller ships an update every 6 months, Harmonizer every 2 months. The most recent releases landed on October 25, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | World Controller | Harmonizer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Size | 7 MB | 20 MB |
| Requires iOS | **12** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Vandalay Industries](https://appshunter.io/developer/1355382384) | [Peter Hafner](https://appshunter.io/developer/1625319412) |

## What reviewers say

### World Controller

[App page](https://appshunter.io/ios/app/world-controller/id6468433369)

**Features:** macOS Compatibility

**In-app purchases:** none


### Harmonizer

[App page](https://appshunter.io/ios/app/harmonizer-auv3/id6791999719)

**In-app purchases:** none


## Frequently asked questions

### Is World Controller free?

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

### Is Harmonizer free?

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

### Do World Controller or Harmonizer have ads?

Neither World Controller nor Harmonizer shows ads.

### Which is updated more often, World Controller or Harmonizer?

World Controller ships an update every 6 months, and Harmonizer every 2 months. Most recently, World Controller was updated on October 25, 2026 and Harmonizer on October 16, 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.*