# TRUSSFALL vs Engine Simulator

The clearest difference is rating: TRUSSFALL at 5.0 against Engine Simulator's 4.3. TRUSSFALL also leads on update cadence (weekly vs every 2 months). Engine Simulator's advantage is ratings volume (90 vs 2) and chart position (#73 vs unranked). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. TRUSSFALL sells 3 one-off in-app purchases and Engine Simulator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

TRUSSFALL holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Engine Simulator has 90 ratings behind it against 2, so its average is the more settled of the two.

TRUSSFALL ships an update weekly, Engine Simulator every 2 months. The most recent releases landed on September 26, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | TRUSSFALL | Engine Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/trussfall-bridge-builder/id6768887407/reviews)** | [4.3 (90 ratings)](https://appshunter.io/ios/app/engine-simulator/id6772016143/reviews) |
| Number of ratings | 2 | **90** |
| Positive reviews | — | 82.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | — | **#73** |
| Size | 1 MB | 22 MB |
| Requires iOS | **17.0** | 18.6 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [CIPRIAN ALEXANDRU FRASINESCU](https://appshunter.io/developer/1896613557) | [MUHAMMAD SAAD ATA](https://appshunter.io/developer/6772016385) |

## What reviewers say

### TRUSSFALL

[App page](https://appshunter.io/ios/app/trussfall-bridge-builder/id6768887407)

Build and test realistic bridge designs across 99 engineering trials. Utilize various materials and structural principles to create stable crossings for vehicles. Earn stars by building strong structures that withstand live load simulations.

**Highlights:** 99 engineering trials, 4 realistic materials, Live load simulation, Multiple bridge templates, 10 distinct biomes, On-device data processing

**Features:** Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 5 Hints | $0.99 | one-time |
| 25 Hints | $2.99 | one-time |
| Lifetime Unlock | $4.99 | one-time |


### Engine Simulator

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

**Currently charting:** #73 Top Grossing · Racing, #143 Top Free · Racing (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 | $4.99 | one-time |


## Frequently asked questions

### Is TRUSSFALL free?

TRUSSFALL 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, TRUSSFALL or Engine Simulator?

TRUSSFALL is rated higher. TRUSSFALL averages 5.0 out of 5 from 2 ratings, while Engine Simulator averages 4.3 from 90 ratings.

### Do TRUSSFALL or Engine Simulator have ads?

Neither TRUSSFALL nor Engine Simulator shows ads.

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

TRUSSFALL ships an update weekly, and Engine Simulator every 2 months. Most recently, TRUSSFALL was updated on September 26, 2026 and Engine Simulator on September 27, 2026.

---

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