# Pond Koi Lite vs RYUKIN

The clearest difference is price: Pond Koi Lite at Free against RYUKIN's $3.49. Pond Koi Lite also leads on in-app purchases (none vs 38). RYUKIN's advantage is review sentiment (94% vs 50%) and rating (4.9 vs 3.3). On ads, device support and iOS requirement there is nothing between them.

Pond Koi Lite is free to download; RYUKIN costs $3.49 up front. RYUKIN sells 35 one-off in-app purchases. Pond Koi Lite asks for nothing beyond the download.

RYUKIN holds the better App Store score, 4.9 against 3.3. That said, the two scores are not equally well evidenced: RYUKIN has 62 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 50% of Pond Koi Lite's written reviews are positive against 94% of RYUKIN's.

Pond Koi Lite ships an update every 2 months, RYUKIN weekly. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Pond Koi Lite | RYUKIN |
| --- | --- | --- |
| Price | **Free** | $3.49 |
| Rating | [3.3 (6 ratings)](https://appshunter.io/ios/app/pond-koi-lite/id856222884/reviews) | **[4.9 (62 ratings)](https://appshunter.io/ios/app/ryukin/id6471839445/reviews)** |
| Number of ratings | 6 | **62** |
| Positive reviews | 50.0% of reviews | **94.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 201 MB | 227 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [荣辉 张](https://appshunter.io/developer/517582330) | [Masataka Hakozaki](https://appshunter.io/developer/323346554) |

## What reviewers say

### Pond Koi Lite

[App page](https://appshunter.io/ios/app/pond-koi-lite/id856222884)

Immerse yourself in a tranquil digital koi pond. Interact with beautiful fish, customize your environment with various backgrounds and flora, and enjoy a rich selection of natural soundscapes for a stress-relieving and uplifting experience.

**Highlights:** Realistic koi fish simulation, Interactive feeding and teasing, Customizable backgrounds and flora, Extensive nature sound library, Realistic water physics, Stress-relieving and uplifting experience

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

**In-app purchases:** none


### RYUKIN

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

Experience the serene beauty of goldfish swimming in a customizable virtual aquarium. Interact with the fish, adjust tank settings, and enjoy soothing visuals and sounds. Perfect for relaxation or a calming presence.

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

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

**In-app purchases (35)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WIREFRAME RAINBOW | $0.99 | one-time |
| ROBO FISH 02 | $1.99 | one-time |
| ROBO FISH 04 | $1.99 | one-time |
| ROBO FISH 06 | $1.99 | one-time |
| GHOST BRIDE | $1.99 | one-time |
| BAT FISH | $1.99 | one-time |
| CALICO ORANGE/WHITE/BLACK | $1.99 | one-time |
| BLACK WHITE KITTY FISH | $1.99 | one-time |
| GHOST TRANSLUCENT | $1.99 | one-time |
| BLACK KITTY FISH | $1.99 | one-time |
| WHITE KITTY FISH | $1.99 | one-time |
| ROBO FISH 03 | $1.99 | one-time |
| GHOST BLACK | $1.99 | one-time |
| ROBO FISH 01 | $1.99 | one-time |
| ORANGE & WHITE KITTY FISH | $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 |
| ORANGE/WHITE | $1.99 | one-time |
| CALICO RED/GRAY/BLACK | $1.99 | one-time |
| YELLOW GOLD RYUKIN | $1.99 | one-time |
| RED CAP ORANDA | $1.99 | one-time |
| RED/WHITE II | $1.99 | one-time |
| LIONHEAD ORANGE/WHITE/BLACK | $1.99 | one-time |
| GHOST LUMINOUS | $1.99 | one-time |
| BLACK RYUKIN | $1.99 | one-time |
| CALICO KITTY FISH | $1.99 | one-time |
| GRAY WHITE KITTY FISH | $1.99 | one-time |
| WHITE VAMPIRE | $1.99 | one-time |
| BLACK VAMPIRE | $1.99 | one-time |
| BLACK WITCH | $1.99 | one-time |
| WHITE WITCH | $1.99 | one-time |
| ZOMBIE 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


## Frequently asked questions

### Is Pond Koi Lite free?

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

### Is RYUKIN free?

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

### Which has better reviews, Pond Koi Lite or RYUKIN?

RYUKIN is rated higher. Pond Koi Lite averages 3.3 out of 5 from 6 ratings, while RYUKIN averages 4.9 from 62 ratings.

### Do Pond Koi Lite or RYUKIN have ads?

Neither Pond Koi Lite nor RYUKIN shows ads.

### Which is updated more often, Pond Koi Lite or RYUKIN?

Pond Koi Lite ships an update every 2 months, and RYUKIN weekly. Most recently, Pond Koi Lite was updated on October 23, 2026 and RYUKIN on October 24, 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.*