# Engine Pistons ASMR vs Sling Cart

The clearest difference is ads: Sling Cart at none against Engine Pistons ASMR's shown. Sling Cart also leads on monetization model (free vs free with in-app purchases) and review sentiment (29% vs 15%). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Engine Pistons ASMR sells 3 one-off in-app purchases and Sling Cart sells 12 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 — 4.6 for Engine Pistons ASMR against 4.6 for Sling Cart. Both are backed by a comparable volume of ratings — 1.9K and 1.6K respectively. Written reviews are what separate them: 15% of Engine Pistons ASMR's written reviews are positive against 29% of Sling Cart's.

Engine Pistons ASMR ships an update weekly, Sling Cart every 10 days. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Engine Pistons ASMR | Sling Cart |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (1.9K ratings)](https://appshunter.io/ios/app/engine-pistons-asmr/id1660464064/reviews) | **[4.6 (1.6K ratings)](https://appshunter.io/ios/app/sling-cart/id6771801735/reviews)** |
| Number of ratings | **1.9K** | 1.6K |
| Positive reviews | 14.8% of reviews | **28.6% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 10 days |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | — | **#170** |
| Size | 517 MB | 359 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Rollic Games](https://appshunter.io/developer/1452111779) | [PlayWill](https://appshunter.io/developer/1865430858) |

## What reviewers say

### Engine Pistons ASMR

[App page](https://appshunter.io/ios/app/engine-pistons-asmr/id1660464064)

Merge engine pistons to earn money and upgrade your car. Experience the satisfying ASMR of engine sounds while competing in races. Unlock diamond, gold, silver, and bronze pistons for maximum speed and profit.

**Highlights:** Merge engine pistons, Earn in-game money, Upgrade car and pistons, ASMR engine sounds, Race to win, Unlock piston tiers

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads 1 | $2.99 | one-time |
| No Ads 2 | $3.99 | one-time |
| No Ads 3 | $4.99 | one-time |

**What reviewers like**

- 👍 Good game concept
- 😍 Satisfying engine piston animation
- 🚀 Quick progression

**What reviewers complain about**

- 🔍 Too many ads and pop-ups
- 🔥 Overheating issues
- 🐛 Glitches and crashes
- 🔋 High battery consumption

**Reported bugs**

- Cars getting stuck or invisible
- Inability to progress past certain levels
- Inconsistent engine sound and animation

**Requested features**

- Remove ads or add paid ad-free option
- Improve performance and stability
- Add more gameplay depth and content


### Sling Cart

[App page](https://appshunter.io/ios/app/sling-cart/id6771801735)

**Currently charting:** #170 Top Free · Racing, #177 Top Grossing · Racing (US App Store)

Launch a crash test dummy and cart with a giant slingshot, then upgrade your vehicle with wings and rockets to achieve maximum distance. Experience hilarious physics and explore diverse environments in this addictive launch game.

**Highlights:** Addictive launch mechanics, Deep upgrade system, Hilarious physics, Beautiful environments, Endless fun, Vehicle evolution

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

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lives Pack 1 | $1.99 | one-time |
| Auto X3 Coins | $3.99 | one-time |
| Gem Pack 1 | $4.99 | one-time |
| Lives Pack 2 | $4.99 | one-time |
| No Ads | $7.99 | one-time |
| No Ads Pack | $9.99 | one-time |
| Lives Pack 3 | $9.99 | one-time |
| Double Rocket Booster | $12.99 | one-time |
| Gem Pack 2 | $12.99 | one-time |
| Gem Pack 3 | $14.99 | one-time |
| Gem Pack 4 | $24.99 | one-time |
| Gem 6 | $49.99 | one-time |


## Frequently asked questions

### Is Engine Pistons ASMR free?

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

### Is Sling Cart free?

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

### Which has better reviews, Engine Pistons ASMR or Sling Cart?

Sling Cart is rated higher. Engine Pistons ASMR averages 4.6 out of 5 from 1.9K ratings, while Sling Cart averages 4.6 from 1.6K ratings.

### Do Engine Pistons ASMR or Sling Cart have ads?

Engine Pistons ASMR shows ads; Sling Cart does not.

### Which is updated more often, Engine Pistons ASMR or Sling Cart?

Engine Pistons ASMR ships an update weekly, and Sling Cart every 10 days. Most recently, Engine Pistons ASMR was updated on October 27, 2026 and Sling Cart on October 28, 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.*