N.V.N. Koi App is made and published by David Vonk. AppBrain is an independent app data site and isn't affiliated with David Vonk. The app name, icon, screenshots and description belong to David Vonk and are shown as published on the App Store.
AppBrain's verdict
Removed- Rating on App Store
- 3.67
- 6 ratings
- Last updated
- April 11, 2021
- Size
- 21.5 MB
N.V.N. Koi App is no longer on the App Store. It had too few ratings to say what users thought.
User feedback
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Store listing
By David Vonk, from the App StoreSimilar apps
Description by David Vonk Written by the developer, not by AppBrain. Click to read.
The first complete app for Koi hobbyists and professionals.
In this app:
Learn about the most common varieties with professional pictures.
Keep track of your Koi and their length.
After simple entry one can calculate a good indication of:
-the amount of food your Koi need daily
-how much filter material is minimally needed
-use the desired bodyweight % you want to feed your Koi
-or calculate the total amount of food a filter can handle daily
The N.V.N. is the Dutch chapter of the Japanese Zen Nippon Airinkai (ZNA) and has knowledge sharing as its main goal to help its members to take care of their Koi as good as possible. In addition to this app, the N.V.N. offers courses, members receive the Koi magazine 6x a year, and members can call on the help of the Koi Pond Advisory Service.
The N.V.N. prints six times a year, at least 132 pages of KOI magazine. By means of this magazine you can learn everything about the beautiful koihobby. With this magazine we strive to provide both the novice and the advanced hobbyist with the latest information. What we think is so important is that as a reader you no longer make the same costly mistakes that others have already made.
In this magazine you can find all sorts of topics about pond construction, filters, fish diseases, experiences of members, news in the business, reports of (foreign) shows, Home made Ponds and needed materials and much more. As you will notice a large amount of information where you can successfully enjoy the hobby.
The Dutch Koi Show, HKS, organized annually by the association, is the largest in the world in terms of size and number of visitors. The show therefore has a great international interest and is as such unique in the world. This show is also unrivalled in terms of atmosphere. If you download the free HKS app you are always assured of the latest info about and during this show.
In this app:
Keep track of your Koi and their length.
After simple entry one can calculate a good indication of:
-the amount of food your Koi need daily
-how much filter material is minimally needed
-use the desired bodyweight % you want to feed your Koi
-or calculate the total amount of food a filter can handle daily
It is also possible to keep track of all the water treatments through a pond log.
Many more updates are planned.
Safety and technology
Found in the app by AppBrain- Price
- Free
- App size
- 21.5 MB
- Content rating
- Everyone
Technologies used by N.V.N. Koi App
Releases
Updates seen on the App Store- Version
- 2.11
- Launched
- February 2018
No changelog data
About the app and developer
About N.V.N. Koi App
N.V.N. Koi App was an utilities app developed by David Vonk. It was removed from the App Store Nov 25, 2025.
User Ratings
N.V.N. Koi App was rated 3.67 out of 5 stars, based on 6 ratings.
App Information
N.V.N. Koi App was free. The app size was 21.50 MB. The last available version was 2.11. The last update was on April 11, 2021.
Technical Requirements
The app had a content rating of Everyone. The app had been available on the App Store since February 2018.
Developer information for David Vonk
Address: