Report updated May 9, 2026
Overview · Full Intel report in progress
Koi - Aquarium is an established simulation app that is free with in-app purchases. With a 4.8/5 rating from 23 reviews, it shows polarized user reception.
What is Koi - Aquarium?
Current Momentum
v1.0
No release notes available.
Competition
Rivals identification in progress
7-Day Rank Pulse 🇺🇸
SimulationNo ranking data
Rating Pulse 🇺🇸
What makes this app unique?
What Does It Look Like?
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What Are The Key Features?
Users can adjust their point of view to observe fish from various angles.
Tapping on fish increases their liking, which serves as a currency for the shop.
Users exchange accumulated liking for diamonds to purchase additional carp and goldfish.
The app provides a function to collect diamonds multiple times per day.
How much does it cost?
Who Built It?
HAREPPO
Providing simple, accessible digital versions of classic board, card, and idle clicker games. Focused on delivering lightweight, pick-up-and-play experiences for casual mobile users.
Portfolio
13
Apps
What other apps does HAREPPO make?
Explore the full HAREPPO report
Portfolio breakdown, audience, momentum, and every app published by HAREPPO.
Analysis in progress, available soon
What do users think recently?
Analysis in progress, available soon
View the full user-sentiment analysis
Mood gauge, ratings & review-volume history, every praise / complaint / request, and sentiment over time.
Analysis in progress, available soon
What is the competitive landscape for Koi - Aquarium?
How's The Simulation Market?
How does it evolve in the Simulation market?
Rank progression
1 active ranking tracked — 30-day window
Strategic analysis coming soon
SWOT, key takeaways & outlook
The outtake for Koi - Aquarium
Key Takeaways
This is a minimalist, passive simulation app centered on the collection and observation of virtual fish.
Where Is It Heading?
Trend analysis
Available very soon