# Engine Simulator vs Armor Sandbox

The clearest difference is rating: Armor Sandbox at 4.8 against Engine Simulator's 4.3. Armor Sandbox also leads on update cadence (daily vs every 3 weeks) and review sentiment (90% vs 79%). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

Armor Sandbox holds the better App Store score, 4.8 against 4.3. Both are backed by a comparable volume of ratings — 137 and 63 respectively. Written reviews point the same way: 79% of Engine Simulator's written reviews are positive against 90% of Armor Sandbox's.

Engine Simulator ships an update every 3 weeks, Armor Sandbox daily. The most recent releases landed on October 28, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Engine Simulator | Armor Sandbox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (137 ratings)](https://appshunter.io/ios/app/engine-simulator/id6772016143/reviews) | **[4.8 (63 ratings)](https://appshunter.io/ios/app/armor-sandbox/id6821128741/reviews)** |
| Number of ratings | **137** | 63 |
| Positive reviews | 78.8% of reviews | **89.8% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Daily** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#61** | #65 |
| Size | 22 MB | 6 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [MUHAMMAD SAAD ATA](https://appshunter.io/developer/6772016385) | [Vitor Japiassu](https://appshunter.io/developer/6821128743) |

## What reviewers say

### Engine Simulator

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

**Currently charting:** #61 Top Free · Racing, #61 Top Grossing · 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 | $8.99 | one-time |


### Armor Sandbox

[App page](https://appshunter.io/ios/app/armor-sandbox/id6821128741)

**Currently charting:** #65 Top Free · Simulation, #197 Top Free · Casual (US App Store)

Explore a 2D physics playground where every element, from projectiles to targets, is simulated with real material properties. Create and experiment with over 110 materials, 60 projectiles, and 90 targets, including detailed vehicle cutaways. Wire up circuits and analyze impacts in multiple views.

**Highlights:** Realistic 2D impact physics simulation, Over 110 simulated materials, Extensive projectile and target library, Detailed vehicle cutaways, Circuit building with electrical components, Multiple analysis views (heat, speed, damage)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Armor Sandbox Complete | $7.99 | one-time |


## Frequently asked questions

### Is Engine Simulator free?

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

### Is Armor Sandbox free?

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

### Which has better reviews, Engine Simulator or Armor Sandbox?

Armor Sandbox is rated higher. Engine Simulator averages 4.3 out of 5 from 137 ratings, while Armor Sandbox averages 4.8 from 63 ratings.

### Do Engine Simulator or Armor Sandbox have ads?

Neither Engine Simulator nor Armor Sandbox shows ads.

### Which is updated more often, Engine Simulator or Armor Sandbox?

Engine Simulator ships an update every 3 weeks, and Armor Sandbox daily. Most recently, Engine Simulator was updated on October 28, 2026 and Armor Sandbox on October 29, 2026.

### Which is more popular, Engine Simulator or Armor Sandbox?

Engine Simulator currently peaks at #61 in the App Store charts, and Armor Sandbox at #65. 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.*