SwarmFlow vs Koi Keeping
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SwarmFlow
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SwarmFlow is a meditative fish swarm simulation, born from a moment at the beach in Mauritius. Watch the swarm move, touch the water, and experience the quiet fascination of collective life. Free Features: - Interactive fish swarm with realistic flocking behavior - Tap the screen and watch the flight reaction - Drag the food source to guide the swarm - Adjust swarm size and behavior Premium Features (one-time purchase): - Up to 150 fish for impressive swarms - 5 color themes: Deep Sea, Night, Coral, Ocean, and Beach - Current simulation: Tilt your iPhone and watch fish swim with or against the flow - AI-generated meditative soundscapes - Screensaver mode as a digital aquarium - Speed control to find your perfect pace - Subtle food sources with soft shadows for an even more harmonious experience No competition. No scores. Just the simple beauty of a swarm responding to your touch.
Koi Keeping
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Koi Keeping biến iPhone/iPad của bạn thành một hồ cá koi nhìn từ trên xuống — nơi để thở chậm lại. • 15 dòng koi với hoa văn riêng, bơi tự nhiên có chiều sâu, bóng đổ và gợn sóng. • 4 "Cảnh Thiền" dựng sẵn: Bình Minh, Mưa Thiền, Đêm Tĩnh, Gió Thu. • 13 phông nền, hoa lá rụng, thời tiết, ngày/đêm, âm cảnh thiên nhiên, hẹn giờ tắt. • Chạm để tạo gợn sóng và cho cá ăn; chạm đôi vào cá để xem tên dòng koi. Hoàn toàn offline — không tài khoản, không quảng cáo, không thu thập dữ liệu.
Screenshots
Verdict
The clearest difference is in-app purchases: Koi Keeping at none against SwarmFlow's 1. SwarmFlow's advantage is iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. SwarmFlow sells 1 one-off in-app purchase. Koi Keeping asks for nothing beyond the download.
| Parameter | SwarmFlow | Koi Keeping |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 8 MB | 98 MB |
| Age rating | 9+ | 4+ |
| Developer | Oliver Lieven | Nguyen Dinh Phat |
In-app purchases
SwarmFlow
- SwarmFlow Premium$1.99
Koi Keeping
No in-app purchases









