# Engine Pistons ASMR vs Circuit Hacker

The clearest difference is review sentiment: Circuit Hacker at 100% against Engine Pistons ASMR's 15%. Circuit Hacker also leads on rating (5.0 vs 4.6). Engine Pistons ASMR's advantage is ratings volume (1.9K vs 3) and iOS requirement (15.0 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Engine Pistons ASMR sells 3 one-off in-app purchases and Circuit Hacker sells 5 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Circuit Hacker holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Engine Pistons ASMR has 1.9K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 15% of Engine Pistons ASMR's written reviews are positive against 100% of Circuit Hacker's.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 27, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Engine Pistons ASMR | Circuit Hacker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (1.9K ratings)](https://appshunter.io/ios/app/engine-pistons-asmr/id1660464064/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/circuit-hacker-match-3/id6811659299/reviews)** |
| Number of ratings | **1.9K** | 3 |
| Positive reviews | 14.8% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Weekly | Weekly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 517 MB | 168 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 9+ |
| Developer | [Rollic Games](https://appshunter.io/developer/1452111779) | [Chase Tuttle](https://appshunter.io/developer/6811600802) |

## 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


### Circuit Hacker

[App page](https://appshunter.io/ios/app/circuit-hacker-match-3/id6811659299)

Engage in strategic match-3 puzzles with evolving objectives and arcade challenges. Clear corrupted circuits using power-ups and special nodes to progress through a campaign of escalating threats.

**Highlights:** Strategic match-3 puzzles, Hazards and power-ups, Special nodes, Evolving objectives, Arcade challenge, Campaign mode

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Forced ads | $4.99 | per month |
| Circuit Hacker Pro Yearly | $29.99 | per year |
| 500 Energy Cells | $1.99 | one-time |
| 1,500 Energy Cell | $4.99 | one-time |
| 4,000 Energy Cells | $9.99 | one-time |


## Frequently asked questions

### Is Engine Pistons ASMR free?

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

### Is Circuit Hacker free?

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

### Which has better reviews, Engine Pistons ASMR or Circuit Hacker?

Circuit Hacker is rated higher. Engine Pistons ASMR averages 4.6 out of 5 from 1.9K ratings, while Circuit Hacker averages 5.0 from 3 ratings.

### Do Engine Pistons ASMR or Circuit Hacker have ads?

Both Engine Pistons ASMR and Circuit Hacker show ads.

### Which is updated more often, Engine Pistons ASMR or Circuit Hacker?

Engine Pistons ASMR ships an update weekly, and Circuit Hacker weekly. Most recently, Engine Pistons ASMR was updated on October 27, 2026 and Circuit Hacker on October 29, 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.*