Koi Expert
Koi Health & Care Guide
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Worried about sick koi, pond water quality, or not knowing what to do first?
Koi Expert is your koi and pond assistant, available when you need it, to help your koi stay healthy and your pond stay stable.
Get clear, practical guidance whether you’re checking for early signs of trouble, improving day-to-day care, or handling something that feels urgent.
With Koi Expert, you can:
• Snap a photo for Koi Health Diagnosis insights
• Estimate fair market value with Koi Price Checker
• Ask Koi Expert anything about pond water, feeding, behavior, and more in chat
• Use your pond care checklist and routines to build consistent habits
Koi Expert isn’t only for “bad days”. It’s a steady companion for better pond husbandry. The more context you share, the more tailored the guidance can feel over time.
Why Koi Expert?
• Catch problems earlier and reduce guesswork
• Support scale and skin health, behavior, and stable pond water
• Get focused, koi-first advice without digging through endless forums
Download Koi Expert and bring koi and pond care into your routine, whether you’re troubleshooting, planning ahead, or learning as you go.
Privacy Policy: https://geckoexpertapp.github.io/koi-expert-legal/privacy-policy.html
Terms of Service: https://geckoexpertapp.github.io/koi-expert-legal/terms-of-service.html
Subscription information
Koi Expert offers weekly and annual plans.
• Koi Expert Weekly Pro: $9.99/week, auto-renews weekly
• Koi Expert Annual Pro: $79.99/year, auto-renews annually
Manage or cancel anytime in your App Store account settings after purchase.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
The developer, Yihong Lim, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Contact Info
- User Content
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Yihong Lim
- Size
- 59.2 MB
- Category
- Lifestyle
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Yihong Lim