238+ iOS apps & games curated and reviewed
The best koi fish aquarium apps and games on iPhone average 4.5★ across 238+ titles — we've ranked them by what real users actually keep on their phones. Updated October 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (1) | Yes | No | Oct 2026 | |
| 2 |  | Free | 4.0★ (8) | Yes | No | Oct 2026 | |
| 3 |  | Free | 4.2★ (14K) | No | Yes | Oct 2026 | |
| 4 |  | Free | 4.6★ (3.5K) | No | Yes | Oct 2026 | |
| 5 |  | Free | 4.2★ (35) | Yes | No | Aug 2026 | |
| 6 |  | Free | 4.7★ (6.3K) | Yes | Yes | Oct 2026 | |
| 7 |  | Free | — | — | No | Jul 2026 | |
| 8 |  | Free | 4.6★ (9.4K) | Yes | Yes | Oct 2026 |
Create and interact with a tranquil virtual koi pond. Feed your fish, customize the scenery, and enjoy a peaceful, visually engaging experience designed for relaxation.
Design and maintain your own virtual koi pond. Care for your fish, customize the environment, and enjoy a peaceful, interactive aquarium experience.
This app helps aquarium owners plan their tanks and avoid common mistakes. It checks fish compatibility and tank stocking levels, offering information on over 1000 fish species. You can save and share your aquarium setups.
