# Engine Visualization 3D & AR vs Automobile Engineering Book

The clearest difference is rating: Automobile Engineering Book at 4.6 against Engine Visualization 3D & AR's 3.9. Automobile Engineering Book also leads on review sentiment (100% vs 83%). Engine Visualization 3D & AR's advantage is in-app purchases (none vs 5) and iOS requirement (11.0 vs 14.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Automobile Engineering Book sells 4 in-app purchases, starting at $2.99 per 3 months. Engine Visualization 3D & AR asks for nothing beyond the download.

Automobile Engineering Book holds the better App Store score, 4.6 against 3.9. Both are backed by a comparable volume of ratings — 7 and 9 respectively. Written reviews point the same way: 83% of Engine Visualization 3D & AR's written reviews are positive against 100% of Automobile Engineering Book's.

Engine Visualization 3D & AR ships an update every 4 weeks, Automobile Engineering Book every 5 weeks. The most recent releases landed on September 30, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Engine Visualization 3D & AR | Automobile Engineering Book |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (7 ratings)](https://appshunter.io/ios/app/engine-visualization-3d-and-ar/id1477436315/reviews) | **[4.6 (9 ratings)](https://appshunter.io/ios/app/automobile-engineering-book/id1583758958/reviews)** |
| Number of ratings | 7 | **9** |
| Positive reviews | 83.3% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 5 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 68 MB | 136 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DEVDEN CREATIVE SOLUTIONS PRIVATE LIMITED](https://appshunter.io/developer/1459843671) | [Oleksandr Pereshein](https://appshunter.io/developer/1041461209) |

## What reviewers say

### Engine Visualization 3D & AR

[App page](https://appshunter.io/ios/app/engine-visualization-3d-and-ar/id1477436315)

Explore engine mechanics in 3D and augmented reality. Visualize internal components, understand functions, and interact with a realistic engine model. Features include X-ray view, RPM control, and voice assistance for pronunciation.

**Highlights:** 3D engine visualization in AR, X-ray view of internal parts, Interactive scale, position, and rotation, RPM control with sound replication, Voice assistance for part identification, Non-AR mode available

**Features:** macOS Compatibility

**In-app purchases:** none


### Automobile Engineering Book

[App page](https://appshunter.io/ios/app/automobile-engineering-book/id1583758958)

This app provides a comprehensive yet accessible guide to automobile engineering. It covers basic vehicle structure, common malfunctions, and maintenance rules in a clear, engaging format with ample illustrations. Ideal for novice drivers and anyone seeking to understand their car better.

**Highlights:** Basic vehicle structure information, Common malfunctions and solutions, Operation and maintenance rules, Simple language explanations of car systems, Extensive illustrative material

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full version | $2.99 | per 3 months |
| Full version for three months | $2.99 | one-time |
| Full version for one year | $4.99 | one-time |
| Full version forever | $6.99 | one-time |


## Frequently asked questions

### Is Engine Visualization 3D & AR free?

Engine Visualization 3D & AR is free to download, with no in-app purchases.

### Is Automobile Engineering Book free?

Automobile Engineering Book is free to download, with in-app purchases available.

### Which has better reviews, Engine Visualization 3D & AR or Automobile Engineering Book?

Automobile Engineering Book is rated higher. Engine Visualization 3D & AR averages 3.9 out of 5 from 7 ratings, while Automobile Engineering Book averages 4.6 from 9 ratings.

### Do Engine Visualization 3D & AR or Automobile Engineering Book have ads?

Neither Engine Visualization 3D & AR nor Automobile Engineering Book shows ads.

### Which is updated more often, Engine Visualization 3D & AR or Automobile Engineering Book?

Engine Visualization 3D & AR ships an update every 4 weeks, and Automobile Engineering Book every 5 weeks. Most recently, Engine Visualization 3D & AR was updated on September 30, 2026 and Automobile Engineering Book on October 1, 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.*