# Fish Simulator! vs Worm.io

The clearest difference is update cadence: Worm.io at every 15 months against Fish Simulator!'s every 32 months. Worm.io also leads on iOS requirement (12.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

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

Fish Simulator! ships an update every 32 months, Worm.io every 15 months. The most recent releases landed on October 4, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Fish Simulator! | Worm.io |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/fish-simulator/id1219708183/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 32 months | **Every 15 months** |
| Monetization | Free | — |
| Size | 164 MB | 68 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Eric Yoon](https://appshunter.io/developer/1219708182) | [Neon Infotech FZ-LLC](https://appshunter.io/developer/1776067103) |

## What reviewers say

### Fish Simulator!

[App page](https://appshunter.io/ios/app/fish-simulator/id1219708183)

Navigate through challenging levels filled with unique fish and environmental hazards. Customize your fish with various hats and accessories in this engaging game suitable for all ages. It offers a simple yet addictive gameplay experience.

**Highlights:** 40 different levels, Outfit shop for customization, Easy to play, hard to master, Suitable for all ages, Unique fish and whirlpools

**Features:** macOS Compatibility

**In-app purchases:** none


### Worm.io

[App page](https://appshunter.io/ios/app/wormio-slither-zone/id6444878605)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Fish Simulator! free?

Fish Simulator! is free to download, with no in-app purchases.

### Is Worm.io free?

Worm.io is free to download, with no in-app purchases.

### Do Fish Simulator! or Worm.io have ads?

Neither Fish Simulator! nor Worm.io shows ads.

### Which is updated more often, Fish Simulator! or Worm.io?

Fish Simulator! ships an update every 32 months, and Worm.io every 15 months. Most recently, Fish Simulator! was updated on October 4, 2026 and Worm.io on October 5, 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.*