# iqSystem vs WolkCentraal

The clearest difference is iOS requirement: iqSystem at 8.0 against WolkCentraal's 12.0. 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.

iqSystem ships an update every 3 months, WolkCentraal every 6 weeks. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | iqSystem | WolkCentraal |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Size | 97 MB | 37 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [IDK Corporation](https://appshunter.io/developer/588948186) | [WolkAbout Technology s.r.o.](https://appshunter.io/developer/1034872941) |

## What reviewers say

### iqSystem

[App page](https://appshunter.io/ios/app/iqsystem/id1439154473)

**Features:** macOS Compatibility

**In-app purchases:** none


### WolkCentraal

[App page](https://appshunter.io/ios/app/wolkcentraal/id1617989076)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iqSystem free?

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

### Is WolkCentraal free?

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

### Do iqSystem or WolkCentraal have ads?

Neither iqSystem nor WolkCentraal shows ads.

### Which is updated more often, iqSystem or WolkCentraal?

iqSystem ships an update every 3 months, and WolkCentraal every 6 weeks. Most recently, iqSystem was updated on October 26, 2026 and WolkCentraal on October 25, 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.*