# Car Assembly Simulator vs Idle Mars Survival

The clearest difference is update cadence: Idle Mars Survival at every 2 weeks against Car Assembly Simulator's every 2 months. Idle Mars Survival also leads on review sentiment (35% vs 20%). Car Assembly Simulator's advantage is iOS requirement (12.0 vs 15.0). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Car Assembly Simulator sells 10 one-off in-app purchases and Idle Mars Survival sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.7 for Car Assembly Simulator against 4.6 for Idle Mars Survival. Both are backed by a comparable volume of ratings — 1.3K and 1.5K respectively. Written reviews are what separate them: 20% of Car Assembly Simulator's written reviews are positive against 35% of Idle Mars Survival's.

Car Assembly Simulator ships an update every 2 months, Idle Mars Survival every 2 weeks. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Car Assembly Simulator | Idle Mars Survival |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.3K ratings)](https://appshunter.io/ios/app/car-assembly-simulator/id6470780377/reviews)** | [4.6 (1.5K ratings)](https://appshunter.io/ios/app/idle-mars-survival-migrate/id6470996516/reviews) |
| Number of ratings | 1.3K | **1.5K** |
| Positive reviews | 20.5% of reviews | **35.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 211 MB | 364 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Solid Games](https://appshunter.io/developer/1625798412) | [Oneorwa Technology Co.,Ltd.](https://appshunter.io/developer/1702491489) |

## What reviewers say

### 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 (10)**

| 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 |

**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


### Idle Mars Survival

[App page](https://appshunter.io/ios/app/idle-mars-survival-migrate/id6470996516)

Survive and build a thriving colony on Mars as a stranded astronaut. Generate power, secure resources, expand your base, produce oxygen, and defend against alien spores. Recruit companions and utilize simulation and RPG elements to establish a successful Martian settlement.

**Highlights:** Generate power and secure resources, Expand base and recruit astronauts, Produce oxygen for colonization, Defend against spore invasions, Combine simulation and RPG elements, Explore map for mineral resources

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Novice gift | $0.99 | one-time |
| 80 Power Stones | $0.99 | one-time |
| 500 Power Stones | $4.99 | one-time |
| Festival Gift No.1 | $4.99 | one-time |
| Festival Gift No.4 | $4.99 | one-time |
| Ad-free | $9.99 | one-time |
| Caretaker | $9.99 | one-time |
| 1200 Power Stones | $9.99 | one-time |
| Luxury gift package | $14.99 | one-time |
| 2500 Power Stones | $19.99 | one-time |

**What reviewers like**

- 🚀 Engaging gameplay
- 👍 Addictive and fun
- 🚀 Smooth performance
- 💡 Creative concept

**What reviewers complain about**

- 🐛 Frequent crashes
- 🔋 Drains battery quickly
- 🔒 Lack of customer support
- 🔒 Buggy and glitchy
- 💰 Monetization issues

**Reported bugs**

- Incorrect resource calculations
- Stuck on second planet with no way to progress
- In-app purchases not working as expected
- Freezing and crashing issues
- Oxygen/resource production imbalance

**Requested features**

- Ability to move buildings
- Improved resource balancing
- Notifications for resource collection
- Cloud save/sync across devices
- Ability to listen to own music


## Frequently asked questions

### Is Car Assembly Simulator free?

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

### Is Idle Mars Survival free?

Idle Mars Survival is free to download, with in-app purchases available.

### Which has better reviews, Car Assembly Simulator or Idle Mars Survival?

Car Assembly Simulator is rated higher. Car Assembly Simulator averages 4.7 out of 5 from 1.3K ratings, while Idle Mars Survival averages 4.6 from 1.5K ratings.

### Do Car Assembly Simulator or Idle Mars Survival have ads?

Both Car Assembly Simulator and Idle Mars Survival show ads.

### Which is updated more often, Car Assembly Simulator or Idle Mars Survival?

Car Assembly Simulator ships an update every 2 months, and Idle Mars Survival every 2 weeks. Most recently, Car Assembly Simulator was updated on November 3, 2026 and Idle Mars Survival on November 5, 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.*