# FlexicX vs Engine Simulator

The clearest difference is rating: FlexicX at 4.8 against Engine Simulator's 4.3. FlexicX also leads on update cadence (every 8 days vs every 2 months) and ratings volume (11K vs 98). Engine Simulator's advantage is ads (none vs shown). On price, review sentiment, in-app purchases and monetization model there is nothing between them.

Both are free to download. FlexicX sells 7 in-app purchases, starting at $2.99 per month and Engine Simulator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

FlexicX holds the better App Store score, 4.8 against 4.3. That said, the two scores are not equally well evidenced: FlexicX has 11K ratings behind it against 98, so its average is the more settled of the two. Written reviews point the same way: 88% of FlexicX's written reviews are positive against 81% of Engine Simulator's.

FlexicX ships an update every 8 days, Engine Simulator every 2 months. The most recent releases landed on October 14, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | FlexicX | Engine Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (11K ratings)](https://appshunter.io/ios/app/flexicx/id6630386616/reviews)** | [4.3 (98 ratings)](https://appshunter.io/ios/app/engine-simulator/id6772016143/reviews) |
| Number of ratings | **11K** | 98 |
| Positive reviews | **88.2% of reviews** | 80.8% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 8 days** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | #109 | **#37** |
| Size | 1.2 GB | 22 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [SIDGIN LLC](https://appshunter.io/developer/1762446045) | [MUHAMMAD SAAD ATA](https://appshunter.io/developer/6772016385) |

## What reviewers say

### FlexicX

[App page](https://appshunter.io/ios/app/flexicx/id6630386616)

**Currently charting:** #109 Top Free · Racing, #117 Top Grossing · Racing (US App Store)

Experience unparalleled softbody destruction with a cutting-edge physics engine. Engage in interactive crash tests with lifelike car models that crumple, bend, and break in real-time. Optimized for mobile, this game offers a dynamic and immersive destruction simulation.

**Highlights:** Realistic softbody physics, Dynamic car deformations, Interactive crash tests, Lifelike car models, Optimized mobile performance, Unique crash scenarios

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Silver | $2.99 | per month |
| Gold 100 | $1.99 | one-time |
| Gold 300 | $3.99 | one-time |
| Gold 700 | $6.99 | one-time |
| Gold 1000 | $9.99 | one-time |
| Gold 5000 | $39.99 | one-time |
| Gold 15000 | $99.99 | one-time |

**What reviewers like**

- 🚀 Realistic crash physics
- 👍 Smooth gameplay
- 🚀 Impressive car models
- 👍 Enjoyable car crash experience
- 👍 Worth the long wait

**What reviewers complain about**

- 🐛 Mustang engine model issues
- 🐛 Machforce GT button bug
- 🐛 Inability to link Game Center account
- 🐛 Garage texture loading issues
- 🐛 Limited maps and terrain options

**Reported bugs**

- Mustang engine model issues
- Machforce GT button bug
- Inability to link Game Center account
- Garage texture loading issues
- Limited maps and terrain options

**Requested features**

- Add more maps and terrain options
- Improve ways to earn in-game currency
- Fix bugs with unlocking certain cars
- Optimize performance and stability


### Engine Simulator

[App page](https://appshunter.io/ios/app/engine-simulator/id6772016143)

**Currently charting:** #37 Top Free · Racing, #72 Top Grossing · Racing, #185 Top Free · Simulation (US App Store)

Explore the physics of piston engines by building, tuning, and testing them. Simulate combustion and rigid body motion in real-time. Compete with others on a global leaderboard by posting your creations.

**Highlights:** Physics-based engine simulation, Build engines from scratch, Tune fuel and ignition maps, Real-time power and torque readings, 3D engine visualization, Global leaderboard

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime | $8.99 | one-time |


## Frequently asked questions

### Is FlexicX free?

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

### Is Engine Simulator free?

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

### Which has better reviews, FlexicX or Engine Simulator?

FlexicX is rated higher. FlexicX averages 4.8 out of 5 from 11K ratings, while Engine Simulator averages 4.3 from 98 ratings.

### Do FlexicX or Engine Simulator have ads?

FlexicX shows ads; Engine Simulator does not.

### Which is updated more often, FlexicX or Engine Simulator?

FlexicX ships an update every 8 days, and Engine Simulator every 2 months. Most recently, FlexicX was updated on October 14, 2026 and Engine Simulator on October 10, 2026.

### Which is more popular, FlexicX or Engine Simulator?

FlexicX currently peaks at #109 in the App Store charts, and Engine Simulator at #37. Chart position reflects recent download velocity rather than total install base.

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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.*