Koi Cal Pond Care + Health AI
Beautiful fish profiles.
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
Meet your school. Track every koi with photos, variety, and growth — plus an AI health plan tuned to your pond, water tests, and weather.
Keep track of your school in a beautiful way. Enter your pond info to keep your water clean and fish healthy.
Koi Cal helps koi owners keep track of every fish they own, diagnose pond problems, dial in feeding, and keep their water crystal clear. Build a profile for each koi, log a feeding, run a water test — and get a personalized Health Plan tuned to your fish, your weather, and your pond.
YOUR SCHOOL, ORGANIZED
• A profile for every koi: name, variety, birthdate, length
• Photo timeline per fish — watch them grow month by month
• AI-stylized portraits of your favorites
• iCloud sync keeps your school backed up across devices
• Sort by name, age, or most recently added
AI HEALTH PLAN
• Personalized feeding recommendations — how much, how often, what food
• Pond Report card — at-a-glance health overview
• Per-concern advice — fixes targeted at your exact problem, not generic forum tips
• Auto-adjusts to your local weather and water temperature
LOG WHAT MATTERS
• Daily feedings (up to 3/day) with food type
• Water tests: pH, KH, GH, nitrate, nitrite, salinity
• Pond setup: size, location, sunlight hours, circulation time
• Fish details: species, size, age group, count
WE CATCH PROBLEMS LIKE
• Cloudy, green, or dark water
• Inadequate circulation or filtration
• Overstocking and overfeeding
• Flukes and other parasites
• Low energy, hiding, or loss of appetite
• Out-of-range pH, nitrite, nitrate, KH, and GH
• Stunted growth and obesity
TRACK YOUR GOALS
Whether you want better color, faster growth, breeding success, or calmer behavior — Koi Cal tunes its recommendations to your goal.
WHY KOI CAL?
Most pond apps treat your fish as a number. Koi Cal treats them as individuals. Every koi gets a name, a photo timeline, and a place in your school — and the AI weighs your pond, your fish, and your weather together to give you one clear answer. Save your fish, save your weekend.
Built for backyard koi keepers, water garden hobbyists, and fish keepers of every level.
End User License Agreement
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
Total redesign! Now keep track of your jewels in the pool.
The developer, Aaron Heine, 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 Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Aaron Heine
- Size
- 25.7 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.5 or later.
- iPhone
Requires iOS 17.5 or later. - iPad
Requires iPadOS 17.5 or later. - Mac
Requires macOS 14.5 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.2 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Yearly Koi Subscription USD 49.99
- Weekly Unlock USD 3.99
- Monthly Koi Cal Subscription USD 9.99
- Copyright
- © 2026 Design Overhaul