By HAREPPO
Report updated May 9, 2026
Koi - Aquarium
For casual gamers interested in low-intensity, aesthetic-focused virtual pet simulations.
Overview · Full Intel report in progress
Koi - Aquarium is an established games app that is free with in-app purchases. With a 4.2/5 rating from 33 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 🇺🇸
GamesNo ranking data
Rating Pulse 🇺🇸
What makes this app unique?
What Does It Look Like?
How Is The App's Momentum Right Now?
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What Are The Key Features?
Users can move their point of view to observe carp and goldfish from various angles.
Players tap on fish to increase their favorability, which can be exchanged for in-game currency.
Users can purchase additional carp and goldfish using diamonds earned through gameplay or advertisements.
Players can participate in mini-games to earn diamonds for use in the shop.
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
Who is HAREPPO?
HAREPPO maintains a high-volume, low-complexity production strategy, focusing on rapid iteration of classic tabletop and idle mechanics. Their portfolio acts as a digital utility library, prioritizing broad accessibility over deep engagement or complex monetization. The primary strategic tension lies in their reliance on a high volume of simple titles, which risks brand dilution in an increasingly competitive casual gaming market.
Who is HAREPPO for?
- Casual mobile gamers seeking short
- Low-friction sessions for relaxation or quick entertainment
Portfolio momentum
With 21 releases in the last 6 months and a significant portion of the portfolio updated recently, the publisher maintains an active development cycle.
What other apps does HAREPPO make?
Analysis in progress, available soon
What do users think recently?
Analysis in progress, available soon
Analysis in progress, available soon
What is the competitive landscape for Koi - Aquarium?
How's The Games Market?
Market outlook for this category
Available very soon
Strategic analysis coming soon
SWOT, key takeaways & outlook
The outtake for Koi - Aquarium
Key Takeaways
This is a minimalist, ad-supported aquarium simulation centered on passive observation and simple interaction mechanics.
Where Is It Heading?
Trend analysis
Available very soon