# Train World 3D vs Car Assembly Simulator

The clearest difference is rating: Car Assembly Simulator at 4.6 against Train World 3D's 2.8. Car Assembly Simulator also leads on ratings volume (1K vs 10). Train World 3D's advantage is in-app purchases (none vs 13). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Car Assembly Simulator sells 13 one-off in-app purchases. Train World 3D asks for nothing beyond the download.

Car Assembly Simulator holds the better App Store score, 4.6 against 2.8. That said, the two scores are not equally well evidenced: Car Assembly Simulator has 1K ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 13% of Train World 3D's written reviews are positive against 20% of Car Assembly Simulator's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 2, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Train World 3D | Car Assembly Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.8 (10 ratings)](https://appshunter.io/ios/app/train-world-3d/id1643518570/reviews) | **[4.6 (1K ratings)](https://appshunter.io/ios/app/car-assembly-simulator/id6470780377/reviews)** |
| Number of ratings | 10 | **1K** |
| Positive reviews | 12.5% of reviews | **20.5% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 205 MB | 211 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yso Corp](https://appshunter.io/developer/659815325) | [Solid Games](https://appshunter.io/developer/1625798412) |

## What reviewers say

### Train World 3D

[App page](https://appshunter.io/ios/app/train-world-3d/id1643518570)

Experience the thrill of managing a railway network. Transport passengers and cargo, upgrade your trains, and develop a bustling city. This simulation game offers a comprehensive train and city-building experience.

**Highlights:** Passenger and cargo transport, Train upgrades, City building, Railway management, 3D simulation

**Features:** macOS Compatibility

**In-app purchases:** none


### Car Assembly Simulator

[App page](https://appshunter.io/ios/app/car-assembly-simulator/id6470780377)

Experience the intricate process of vehicle manufacturing. Assemble a car from its smallest components, build and transport parts, and meticulously add accessories to complete the final product.

**Highlights:** Assemble car body, Add various accessories, Build and carry parts, Step-by-step assembly process, Component-based construction

**Features:** macOS Compatibility

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Contains 10 Ad tickets | $0.99 | one-time |
| Contains 25 Ad tickets | $1.99 | one-time |
| Diamond Pack 1 | $1.99 | one-time |
| Contains 60 Ad tickets | $3.99 | one-time |
| No Ads Lite | $4.99 | one-time |
| Sign-in rewards | $4.99 | one-time |
| Equipment manager | $4.99 | one-time |
| Diamond Pack 2 | $4.99 | one-time |
| No Ads Plus | $9.99 | one-time |
| Diamond Pack 3 | $9.99 | one-time |
| Diamond Pack 4 | $19.99 | one-time |
| Diamond Pack 5 | $49.99 | one-time |
| Diamond Pack 6 | $99.99 | one-time |

**What reviewers like**

- 👍 Fun game
- 🚀 Game is easy to play

**What reviewers complain about**

- 🗣️ Too many ads
- 💢 Forced ad breaks
- 🔍 Ads even after purchase
- ⏱️ Ads every minute

**Reported bugs**

- Glass counter not working properly
- Missions still say 'get to level 10' even after reaching level 10

**Requested features**

- Remove forced ad breaks
- Reduce frequency of ads


## Frequently asked questions

### Is Train World 3D free?

Train World 3D is free to download, with no in-app purchases.

### Is Car Assembly Simulator free?

Car Assembly Simulator is free to download, with in-app purchases available.

### Which has better reviews, Train World 3D or Car Assembly Simulator?

Car Assembly Simulator is rated higher. Train World 3D averages 2.8 out of 5 from 10 ratings, while Car Assembly Simulator averages 4.6 from 1K ratings.

### Do Train World 3D or Car Assembly Simulator have ads?

Both Train World 3D and Car Assembly Simulator show ads.

### Which is updated more often, Train World 3D or Car Assembly Simulator?

Train World 3D ships an update every 2 months, and Car Assembly Simulator every 2 months. Most recently, Train World 3D was updated on October 2, 2026 and Car Assembly Simulator on October 18, 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.*