# 4WD Racing vs Brain Printer

The clearest difference is in-app purchases: 4WD Racing at none against Brain Printer's 2. 4WD Racing also leads on device support (3 vs 1) and iOS requirement (9.0 vs 18.2). On price and ads there is nothing between them.

Both are free to download. Brain Printer sells 2 in-app purchases, starting at $2.99 per 7 days. 4WD Racing asks for nothing beyond the download.

## The numbers

| Metric | 4WD Racing | Brain Printer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/brain-printer/id6741827154/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Fortnightly |
| Monetization | — | Free with in-app purchases |
| Size | 12 MB | 220 MB |
| Requires iOS | **9.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [健 吴](https://appshunter.io/developer/915660333) | [Steven Strange](https://appshunter.io/developer/1637538508) |

## What reviewers say

### 4WD Racing

[App page](https://appshunter.io/ios/app/4wd-racing/id1628316252)

**Features:** macOS Compatibility

**In-app purchases:** none


### Brain Printer

[App page](https://appshunter.io/ios/app/brain-printer/id6741827154)

Scan your head to estimate brain volume and generate a 3D-printable model. This app uses facial scanning to calculate head circumference and convert measurements into a downloadable STL file for 3D printing.

**Highlights:** Brain size estimation, Facial scanning technology, 3D model generation, Downloadable STL file, Share results

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Save Unlimited STL Files | $2.99 | per 7 days |
| Single STL File | $4.99 | one-time |


## Frequently asked questions

### Is 4WD Racing free?

4WD Racing is free to download, with no in-app purchases.

### Is Brain Printer free?

Brain Printer is free to download, with in-app purchases available.

### Do 4WD Racing or Brain Printer have ads?

Neither 4WD Racing nor Brain Printer shows ads.

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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.*