# Marine Engine ASMR vs Grass Eater

The clearest difference is review sentiment: Grass Eater at 44% against Marine Engine ASMR's 0%. Grass Eater also leads on rating (4.3 vs 4.0) and ratings volume (53 vs 8). Marine Engine ASMR's advantage is update cadence (every 2 weeks vs every 3 months) and iOS requirement (11.0 vs 13.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Grass Eater holds the better App Store score, 4.3 against 4.0. That said, the two scores are not equally well evidenced: Grass Eater has 53 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 0% of Marine Engine ASMR's written reviews are positive against 44% of Grass Eater's.

Marine Engine ASMR ships an update every 2 weeks, Grass Eater every 3 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Marine Engine ASMR | Grass Eater |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (8 ratings)](https://appshunter.io/ios/app/marine-engine-asmr/id1672280746/reviews) | **[4.3 (53 ratings)](https://appshunter.io/ios/app/grass-eater/id6444343670/reviews)** |
| Number of ratings | 8 | **53** |
| Positive reviews | 0.0% of reviews | **44.4% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 2 weeks** | Every 3 months |
| Monetization | Ad-supported | Ad-supported |
| Size | 448 MB | 182 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [GOODROID,Inc.](https://appshunter.io/developer/951688937) | [Yso Corp](https://appshunter.io/developer/659815325) |

## What reviewers say

### Marine Engine ASMR

[App page](https://appshunter.io/ios/app/marine-engine-asmr/id1672280746)

Compete in races by upgrading your engines to finish faster than opponents. Earn money to enhance your vehicle and achieve victory. This is a popular clicker game focused on speed and upgrades.

**Highlights:** Engine upgrades, Race to earn money, Faster progression, Competitive gameplay, Clicker mechanics

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

**In-app purchases:** none


### Grass Eater

[App page](https://appshunter.io/ios/app/grass-eater/id6444343670)

Grow your grass empire by consuming vast amounts of it. Reproduce to create more grass eaters and evolve your species. A simple yet engaging idle game focused on growth and progression.

**Highlights:** Eat grass to grow, Reproduce to create children, Evolve your grass eaters, Simple progression gameplay, Idle game mechanics

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Marine Engine ASMR free?

Marine Engine ASMR is free to download, with no in-app purchases.

### Is Grass Eater free?

Grass Eater is free to download, with no in-app purchases.

### Which has better reviews, Marine Engine ASMR or Grass Eater?

Grass Eater is rated higher. Marine Engine ASMR averages 4.0 out of 5 from 8 ratings, while Grass Eater averages 4.3 from 53 ratings.

### Do Marine Engine ASMR or Grass Eater have ads?

Both Marine Engine ASMR and Grass Eater show ads.

### Which is updated more often, Marine Engine ASMR or Grass Eater?

Marine Engine ASMR ships an update every 2 weeks, and Grass Eater every 3 months. Most recently, Marine Engine ASMR was updated on November 3, 2026 and Grass Eater on November 3, 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.*