# Koi Feeder vs Magic Fluid Sand

The clearest difference is review sentiment: Koi Feeder at 100% against Magic Fluid Sand's 0%. Koi Feeder also leads on rating (3.0 vs 1.0). Magic Fluid Sand's advantage is update cadence (monthly vs every 19 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

Koi Feeder holds the better App Store score, 3.0 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 100% of Koi Feeder's written reviews are positive against 0% of Magic Fluid Sand's.

Koi Feeder ships an update every 19 months, Magic Fluid Sand monthly. The most recent releases landed on June 5, 2026 and August 23, 2026 respectively.

## The numbers

| Metric | Koi Feeder | Magic Fluid Sand |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/koi-feeder/id1325380896/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/magic-fluid-sand/id6446834621/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 19 months | **Monthly** |
| Monetization | Ad-supported | Ad-supported |
| Size | 67 MB | 28 MB |
| Requires iOS | 12.0 | 12 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [kume toru](https://appshunter.io/developer/731695033) | [立辉 韩](https://appshunter.io/developer/1434803840) |

## What reviewers say

### Koi Feeder

[App page](https://appshunter.io/ios/app/koi-feeder/id1325380896)

Interact with digital koi by feeding them. Enjoy a simple, relaxing experience designed to be played with.

**Highlights:** Feed digital koi, Interact with koi, Relaxing gameplay, Simple interface

**Features:** macOS Compatibility

**In-app purchases:** none


### Magic Fluid Sand

[App page](https://appshunter.io/ios/app/magic-fluid-sand/id6446834621)

Experience a unique blend of classic Tetris and 2048 gameplay with relaxing fluid sand simulations. Enjoy synthesized music and inspiring quotes for a calming and visually engaging experience.

**Highlights:** Fluid sand simulation, Classic Tetris gameplay, 2048 puzzle game, Synthesized background music, Inspiring life quotes, Interactive sand control

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

**In-app purchases:** none


## Frequently asked questions

### Is Koi Feeder free?

Koi Feeder is free to download, with no in-app purchases.

### Is Magic Fluid Sand free?

Magic Fluid Sand is free to download, with no in-app purchases.

### Which has better reviews, Koi Feeder or Magic Fluid Sand?

Koi Feeder is rated higher. Koi Feeder averages 3.0 out of 5 from 2 ratings, while Magic Fluid Sand averages 1.0 from 1 ratings.

### Do Koi Feeder or Magic Fluid Sand have ads?

Both Koi Feeder and Magic Fluid Sand show ads.

### Which is updated more often, Koi Feeder or Magic Fluid Sand?

Koi Feeder ships an update every 19 months, and Magic Fluid Sand monthly. Most recently, Koi Feeder was updated on June 5, 2026 and Magic Fluid Sand on August 23, 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.*