RYUKIN

🇺🇸 United States
Masataka Hakozaki  | 
32
ASO score
Text
21/100
Reviews
60/100
Graphic
46/100
Other
0/100
rating
App Rating
4.9
rating
Votes
9.84K
rating
App Age
1 year 10m
rating
Last Update
Dec 14, 2025
rating
iAP
$1.99 - 1.99

Compare with Category Top Apps

Metrics
Current App
Category Top Average
Difference
Installs
5.1K
78.5M
-100%
Rating
4.85
4.33
+12%
Number of Ratings (Voted)
5.9K
86.8M
-100%
App Age
1y 9m
3y 6m
-49%
Price
$3
$0
In-app Purchases Price
$2
$135
-99 %
Update Frequency
20d
101d
-80%
Title Length
6
26
-77%
Short Description Length
30
58
-48%
Description Length
1 977
2 233
-11%
Number of Screenshots
648
876
-26 %
Has Video?
No
0% has videos
Size
0MB
0MB

Category Ranking in United States

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Top Dec 18, 2025 Dec 25, 2025
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Top Dec 18, 2025 Dec 25, 2025
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Top Dec 18, 2025 Dec 25, 2025
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Top Dec 18, 2025 Dec 25, 2025
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Downloads

Downloads Graph
Downloads icon
Total
5.1K
Last month icon
Last month
117

Text ASO

Title (
Characters: 6 of 50
)
RYUKIN
Short Description (
Characters: 30 of 80
)
Gracefully Fluttering Goldfish
Description (
Characters: 1977 of 4000
)
~ Gracefully Fluttering Goldfish ~ Goldfish glide gracefully through crystal-clear water, their fins fluttering gently as they swim. Their charming gestures and soft, delicate fin movements have been carefully recreated. Enjoy the beauty of goldfish anytime, anywhere — without the need for water changes or feeding. App Highlights - Fish respond to your touch and follow your finger - Customize tank shape, background color, and floating objects - Soothing water sounds and clear, refreshing visuals - "Cat & Baby Mode" for safe play with kittens and toddlers - Sleep timer for relaxing bedtime use - Play your favorite music while watching the aquarium - Clock and date display - White and black goldfish included; colorful and themed fish available via in-app purchase Settings & Customization - Camera options (Free position / Follow fish / Auto-rotation) - Screen orientation - Tilt sensitivity - Sleep timer - UI size - Toggle water surface, bubbles, and other effects - Adjust brightness, saturation, contrast, and color tone - Quality settings (resolution and various effects) - Volume settings (water sounds, bubble sounds) - Clock & date options (font, position, size) Other Features - Fish, objects, and the water surface respond to touch and device tilt - Fish may whimsically swim toward your finger - Tap too much and the fish may faint! - Feed the fish - Adjust the size of fish and objects - Display up to six fish at once ‥∴ Bringing the Allure of Goldfish Closer ∴‥ This app was born from a childhood dream of recreating goldfish through programming. Fifteen years after the release of the original app *Wa Kingyo*, countless refinements have been made to capture the graceful and charming nature of these fish. From the gentle movement of their fins to the way they chase and munch on food, experience the beauty and warmth that goldfish bring. News and Support X: @m_hakozaki TikTok: @m_hakozaki Instagram: @masataka.hakozaki}
Read more

Visual ASO

Screenshots

Rating & Reviews

Reviews Overview
🧐 Coming Soon…
Rating
4.9
9 844 voters

Some Latest Reviews

クラゲボン
01 Dec, 2025
5
アプデで水槽や柄が増えて嬉しいです。ウロコの質感がとても素晴らしく、金魚が体をくねらせるときの色合いの変化が美しいです。水音もとても綺麗で癒やされます。
Steven Bloomfield
01 Dec, 2025
5
Beautiful and relaxing. It would be nice if the extra fish could be purchased in a bundle, like 4 for the price of 3.
Oliwia
01 Dec, 2025
1
Śliczne ale każda inna ryba płatna 9,89zl (22 ryby do kupienia). Niestety też bardzo słaba jakość
J P
05 Nov, 2025
4
Real nice aquarium simulation with surprising love for detail. I'd love a pomodoro modus. Some individual settings for the fishes behavior - swim speed, social, shy etc. would be nice too for the future.
うさ使い“うさぎ飼い”
02 Nov, 2025
5
アップデートで対応機種に戻してもらえました 金魚?の種類も増えていて可愛いですね 透けるおばけ追加購入しました
Yuanbei Li
06 Oct, 2025
4
The fish are gorgeous and very pretty. Probably the nicest looking fish I've seen in a game. Relaxing to watch. Super cute. It's a pretty simple experience, think of it as an art toy for you to admire gold fish in various settings. The only downside is that aside from the white and black goldfish. All the other goldfish are IAP. It's a bit sad you'll need to pay extra for an iconic red goldfish.
にんじんしりしり
05 Sep, 2025
5
とても癒やされます…。水や金魚その他にもとにかくリアルに表現されています。花びらなどのオブジェで美しく幻想的な水槽にもなるのが素晴らしい!環境音も癒やされます。餌がキラキラ輝く光なのもいい気分です。 環境設定や操作性も細かく配慮されていると感じています。 他のミュージックアプリでリラックスBGMを流しながら寝たいと思います。 最高のアプリです!!
Mandi Cross (Gem)
24 Aug, 2025
5
THIS is my second favorite app, my first being my Bible app. I can't express how excited I was when I saw its release, I've been following this artist for a long time. I'm happy to say this is the best money I've ever spent on a beautiful game, they should charge more honestly.
Kristel Vanwinckel
29 May, 2025
5
I love fishes much, i love to play with them and look so real. It's so beautiful. I really love it❤

Other

Additional Information
Rating:
4.91
Voted: 9.84K
Google Play Link:
Price: 4.03 $
Website:
Email:
Privacy Policy:
Categories: Entertainment
Size: -
iAP: 1.99 - 1.99 $
Installs: 5.09K
App Age: 1 year 10 months
Release Date: Mar 07, 2024
Last Update: Dec 14, 2025
Version: 1.13.6
Version history
1.13.6
Dec 14, 2025
- Made various minor adjustments.
1.13.5
Dec 03, 2025
- Added support for split-screen mode.<br>- Improved fin movements.<br>- Made minor adjustments.
Version history