# RYUKIN vs Cherimo

The clearest difference is price: Cherimo at Free against RYUKIN's $3.49. RYUKIN's advantage is ads (none vs shown). On update cadence, in-app purchases, device support and iOS requirement there is nothing between them.

Cherimo is free to download; RYUKIN costs $3.49 up front. RYUKIN sells 10 one-off in-app purchases and Cherimo sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

RYUKIN ships an update every 8 days, Cherimo weekly. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | RYUKIN | Cherimo |
| --- | --- | --- |
| Price | $3.49 | **Free** |
| Rating | **[4.9 (62 ratings)](https://appshunter.io/ios/app/ryukin/id6471839445/reviews)** | — |
| Number of ratings | **62** | — |
| Positive reviews | 94.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 8 days | **Weekly** |
| Monetization | Paid | — |
| Size | 229 MB | 68 MB |
| Requires iOS | **16.0** | 16.4 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Masataka Hakozaki](https://appshunter.io/developer/323346554) | [Hiroki Nomura](https://appshunter.io/developer/799419983) |

## What reviewers say

### RYUKIN

[App page](https://appshunter.io/ios/app/ryukin/id6471839445)

Experience the serene beauty of a virtual goldfish aquarium. Customize your tank, interact with the fish, and enjoy soothing sounds. Features a special mode for young children and a sleep timer for relaxation.

**Highlights:** Interactive goldfish that respond to touch, Customizable tank shape and background, Soothing water sounds and visuals, Cat & Baby Mode for safe play, Sleep timer for bedtime, Clock and date display

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ROBO FISH 02 | $1.99 | one-time |
| GHOST TRANSLUCENT | $1.99 | one-time |
| GHOST BLACK | $1.99 | one-time |
| RED RYUKIN | $1.99 | one-time |
| RED-WHITE RYUKIN | $1.99 | one-time |
| CALICO RED/WHITE/BLACK | $1.99 | one-time |
| YELLOW GOLD RYUKIN | $1.99 | one-time |
| CALICO KITTY FISH | $1.99 | one-time |
| SKELETON FISH | $1.99 | one-time |
| PANDA TELESCOPE | $1.99 | one-time |

**What reviewers like**

- 💎 Gorgeous and lifelike fish
- 🎨 Beautiful and customizable environments
- 🎶 Soothing water sounds
- 🕰️ Useful clock feature
- 👍 Immersive and relaxing experience

**What reviewers complain about**

- 🔋 High battery consumption on max settings
- 💰 Additional fish require paid purchases
- 🌱 Lack of plant/natural decor options
- 🐟 Limited variety of standard goldfish

**Reported bugs**

- Occasional crashing on high-end devices

**Requested features**

- Ability to change fish colors
- Add more fish species (e.g. bettas, tetras)
- Implement fish breeding/growth mode
- Allow customizing fish placement in tank
- Add desktop/widget mode for always-on display


### Cherimo

[App page](https://appshunter.io/ios/app/cherimo-partner-notes-and-gifts/id6781822737)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cherimo Plus | $4.99 | per month |
| Cherimo Pro | $9.99 | per month |


## Frequently asked questions

### Is RYUKIN free?

RYUKIN costs $3.49, and also offers in-app purchases.

### Is Cherimo free?

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

### Do RYUKIN or Cherimo have ads?

Cherimo shows ads; RYUKIN does not.

### Which is updated more often, RYUKIN or Cherimo?

RYUKIN ships an update every 8 days, and Cherimo weekly. Most recently, RYUKIN was updated on November 8, 2026 and Cherimo on October 31, 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.*