# Plumbing 3D IPC Code Learning vs IQ Test

The clearest difference is price: IQ Test at Free against Plumbing 3D IPC Code Learning's $4.99. IQ Test also leads on update cadence (every 4 days vs every 4 months). Plumbing 3D IPC Code Learning's advantage is chart position (#198 vs unranked). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

IQ Test is free to download; Plumbing 3D IPC Code Learning costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Plumbing 3D IPC Code Learning ships an update every 4 months, IQ Test every 4 days. The most recent releases landed on October 12, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Plumbing 3D IPC Code Learning | IQ Test |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 4 days** |
| Best chart rank | **#198** | — |
| Size | 23 MB | 5 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yuhsiu Lai](https://appshunter.io/developer/433114647) | [Andrii Zakharov](https://appshunter.io/developer/6779217338) |

## What reviewers say

### Plumbing 3D IPC Code Learning

[App page](https://appshunter.io/ios/app/plumbing-3d-ipc-code-learning/id6774491840)

**Currently charting:** #198 Top Paid · Education (US App Store)

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

**In-app purchases:** none


### IQ Test

[App page](https://appshunter.io/ios/app/iq-test-reasoning-score/id6791056890)

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

**In-app purchases:** none


## Frequently asked questions

### Is Plumbing 3D IPC Code Learning free?

Plumbing 3D IPC Code Learning costs $4.99, with no in-app purchases.

### Is IQ Test free?

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

### Do Plumbing 3D IPC Code Learning or IQ Test have ads?

Neither Plumbing 3D IPC Code Learning nor IQ Test shows ads.

### Which is updated more often, Plumbing 3D IPC Code Learning or IQ Test?

Plumbing 3D IPC Code Learning ships an update every 4 months, and IQ Test every 4 days. Most recently, Plumbing 3D IPC Code Learning was updated on October 12, 2026 and IQ Test on October 11, 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.*