KoiControl - The Koi App 4+

Koi, Water Quality & Pond


Designed for iPad

    • 4.6 • 28 Ratings
    • Free
    • Offers In-App Purchases



Put an end to paperwork! With KoiControl the annoying process of writing down water parameters and koi data on paper has finally come to an end. Additionally, KoiControl helps you to determine the right amount of food for your koi population.

After downloading the app for free you will first use a trial version with limited functionality. This allows you to get a better impression of the app and, if you like it, you can unlock all features by purchasing the premium version for your account. This is a yearly subscription, which helps us to develop more features for you and enables you to store as many entries as you wish on our servers. Read more below to get an overview of KoiControl's benefits:

Keep an eye on your water parameters!
As a pond owner, it is important to regularly measure your water parameters to ensure the well-being of your fish. With KoiControl you always keep an eye on all parameters. The app analyzes your water parameters and gives you suggestions on how to improve them if necessary.

Manage and track your koi!
Create your koi as profiles in the app to always keep an overview of your koi population. You can save all important information about your fish, such as name, variety, age, size, weight and much more. The built-in growth history makes it easy to see how well your koi have grown.

Ensure ideal growth!
Healthy and strong growth is the desire of every koi keeper. Through our built-in food calculator you can calculate the ideal amount of food. Based on your koi population and the water temperature, the recommended food quantity for your growth ambitions is calculated automatically. You don't even need to know the weight of your fish, as KoiControl determines this very accurately based on the length of the fish.

Recognize developments early!
The growth of your fish and the water quality of your pond are very important for you as a koi owner. How nice would it be to see trends and developments in your water measurements and koi growth at an early stage? Thanks to our automatically generated charts you can easily see trends and the potential of your koi. It is also possible to create a PDF file so that you can share your success with others or create a seasonal report.

Manage your ponds!
The essential information of your pond can be stored in the app. This includes e.g. volume, circulation rate or the deepest point. Even multiple ponds are not a problem. You can clearly assign fish and water measurements to the respective pond.

Enjoy the app on all your devices!
You own more than one device on which you want to use the app? A KoiControl account enables you to manage your stored data on all your devices. Of course, you can also use the app without an account and then transfer your data at a later time.

Can also be used offline!
No WiFi at the pond? No problem, our app can of course also be used without an internet connection.

Terms of use / EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

What’s New

Version 4.8.0

Improved the app performance for pages with a lot of entries.

Ratings and Reviews

4.6 out of 5
28 Ratings

28 Ratings

ebay user 356 ,

Great App, almost perfect

I’m loving this app to keep track of my koi keeping journey.

I would find it extremely useful to have a diary/general comments section to add general notes. I say this because after using the app for a while, I have found that sometimes I put comments under the koi section and other times under the pond section and then have to hunt for where I put it. Now I appreciate this my just be me and others are rolling their eyes but that would be extremely helpful. Other than that, great job on the app 👍

Developer Response ,

Thank you very much for the feedback! Glad to hear that you are enjoying the app.

Regarding the notes:The idea is that general notes/comments can be put in the pond log and notes that are specific to individual koi can be added to the respective koi detail page. We'll think about how we can make this distinction more clear :)

Bassman999 ,

A Must Have for all Koi Keepers

I’ve been using this app every week now for over 12 months and I believe it is the best app of its type out there and absolutely a “must have” for all koi keepers.
It’s ease of use, informative functions and the graphs/data that is built up to show development and trends is absolutely superb.
The continuing development of this app will ensure it remains invaluable for years to come.
10/10 Excellent.

Developer Response ,

Thank you very much for your feedback! We are super happy to hear that the app is valuable to you. We are motivated to keep improving the app for a long time :)

Mickcriss ,

All koi keepers

This is perfect for Koi keepers. No more sheets of paper with all the info you require from testing, tracking your fish size , feeding, treatments reminders. Pond size & volume even photos of your fish and pondI can’t see why you wouldn’t use it well done lads 10 out of 10 👍

Developer Response ,

Thanks a lot! We are really happy to hear that you like our koi pond app so much :)

App Privacy

The developer, BMS-Digital, 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:

  • Contact Info
  • User Content
  • Identifiers

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Usage Data
  • Diagnostics

Privacy practices may vary based on, for example, the features you use or your age. Learn More

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