# The Marimo vs 記憶サイモン

The clearest difference is update cadence: 記憶サイモン at every 2 days against The Marimo's every 3 months. The Marimo's advantage is iOS requirement (15.6 vs 17.0). 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.

The Marimo ships an update every 3 months, 記憶サイモン every 2 days. The most recent releases landed on October 26, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | The Marimo | 記憶サイモン |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (16 ratings)](https://appshunter.io/ios/app/the-marimo/id398361669/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | 79.6% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | Ad-supported | — |
| Size | 18 MB | 7 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kosuke Ogawa](https://appshunter.io/developer/379825481) | [BIKRAM KANDEL](https://appshunter.io/developer/1841287667) |

## What reviewers say

### The Marimo

[App page](https://appshunter.io/ios/app/the-marimo/id398361669)

Care for a virtual green ball creature that grows over time. Keep its environment clean and provide light to ensure its survival. Customize its appearance and interact with it through various gestures.

**Highlights:** Virtual pet care, Growth simulation, Environment maintenance, Customization options, Interactive controls, Social sharing

**Features:** Vision Pro support

**In-app purchases:** none


### 記憶サイモン

[App page](https://appshunter.io/ios/app/id6785276246)

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

**In-app purchases:** none


## Frequently asked questions

### Is The Marimo free?

The Marimo is free to download, with no in-app purchases.

### Is 記憶サイモン free?

記憶サイモン is free to download, with no in-app purchases.

### Do The Marimo or 記憶サイモン have ads?

Both The Marimo and 記憶サイモン show ads.

### Which is updated more often, The Marimo or 記憶サイモン?

The Marimo ships an update every 3 months, and 記憶サイモン every 2 days. Most recently, The Marimo was updated on October 26, 2026 and 記憶サイモン on October 19, 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.*