# ENGINO kidCAD (3D Viewer) vs QuizKeep

The clearest difference is device support: ENGINO kidCAD (3D Viewer) at 3 against QuizKeep's 1. ENGINO kidCAD (3D Viewer) also leads on iOS requirement (15.0 vs 18.0). On price, 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.

## The numbers

| Metric | ENGINO kidCAD (3D Viewer) | QuizKeep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.7 (53 ratings)](https://appshunter.io/ios/app/engino-kidcad-3d-viewer/id962175208/reviews)** | — |
| Number of ratings | **53** | — |
| Positive reviews | 17.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Monetization | Free | — |
| Size | 160 MB | 2 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Engino](https://appshunter.io/developer/875789415) | [Idan Buzaglo](https://appshunter.io/developer/1802500400) |

## What reviewers say

### ENGINO kidCAD (3D Viewer)

[App page](https://appshunter.io/ios/app/engino-kidcad-3d-viewer/id962175208)

Explore and interact with 3D models of various vehicles and machines. Rotate, zoom, and explode models to understand their construction and assembly. Access an ever-growing library of designs for educational and creative purposes.

**Highlights:** 3D model viewing, Rotate and zoom functionality, Explode model feature, Extensive model library, Continually updated content, Educational construction system models

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

**In-app purchases:** none


### QuizKeep

[App page](https://appshunter.io/ios/app/quizkeep/id6805420509)

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

**In-app purchases:** none


## Frequently asked questions

### Is ENGINO kidCAD (3D Viewer) free?

ENGINO kidCAD (3D Viewer) is free to download, with no in-app purchases.

### Is QuizKeep free?

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

### Do ENGINO kidCAD (3D Viewer) or QuizKeep have ads?

Neither ENGINO kidCAD (3D Viewer) nor QuizKeep shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*