# Pump Pistons vs Engine Simulator

The clearest difference is in-app purchases: Pump Pistons at none against Engine Simulator's 1. Pump Pistons also leads on iOS requirement (11.0 vs 18.6). Engine Simulator's advantage is ads (none vs shown) and chart position (#46 vs unranked). On price and device support there is nothing between them.

Both are free to download. Engine Simulator sells 1 one-off in-app purchase. Pump Pistons asks for nothing beyond the download.

## The numbers

| Metric | Pump Pistons | Engine Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (98 ratings)](https://appshunter.io/ios/app/engine-simulator/id6772016143/reviews)** |
| Number of ratings | — | **98** |
| Positive reviews | — | 80.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | — | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Best chart rank | — | **#46** |
| Size | 90 MB | 22 MB |
| Requires iOS | **11.0** | 18.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Virtual Projects Oyun Yazilim Ve Teknoloji](https://appshunter.io/developer/1327820445) | [MUHAMMAD SAAD ATA](https://appshunter.io/developer/6772016385) |

## What reviewers say

### Pump Pistons

[App page](https://appshunter.io/ios/app/pump-pistons/id1667301798)

**Features:** macOS Compatibility

**In-app purchases:** none


### Engine Simulator

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

**Currently charting:** #46 Top Free · Racing, #55 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 |


## Frequently asked questions

### Is Pump Pistons free?

Pump Pistons is free to download, with no in-app purchases.

### Is Engine Simulator free?

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

### Do Pump Pistons or Engine Simulator have ads?

Pump Pistons shows ads; Engine Simulator does not.

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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.*