# KNF Solutions — Calculate Natural Farm Formula > Calculates Korean Natural Farming solutions for plant growth stages. (iPhone/iPad app by Eric Weinert.) - Source: https://appshunter.io/ios/app/knf-solutions/id1224969180 (this page in markdown: same URL + `.md`) - Developer: [Eric Weinert](https://appshunter.io/developer/933153744) - Category: Productivity, Education - Price: $3.99 - Rating: 4.70/5 from 11 App Store ratings · 7 written reviews indexed - Age rating: 4+ - Requires: iOS 12.1 · 8 MB - Languages: American English - Released: 2017-06-20 - Data updated: 2026-06-25 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/knf-solutions/id1224969180/reviews.md ## What is KNF Solutions? KNF (Korean Natural Farming) Solution Calculator App gets you the correct solutions every time! Make Seed Soak Solution, Leaf Growth, Flower, Fruit, and Enhanced Ripening Solutions accurately based on the amount of gallons or liters to be diluted. Learn how to make and use Oriental Herbal Nutrient (OHN), Fermented Plant Juice (FPJ), Brown Rice Vinegar (BRV), Fish Amino Acid (FAA), Water-soluble Calcium Phosphate (WCP), Water-soluble Calcium (WCA), Lactic Acid Bacteria (LAB), Seawater (SEA). Master Cho will be proud of your diligence! Long live the natural farmer! ## Key features - Seed Soak Solution calculator - Leaf Growth Solution calculator - Flower and Fruit Solution calculator - Enhanced Ripening Solution calculator - Recipes for OHN, FPJ, BRV, FAA, WCP, WCA, LAB, SEA ## Recent user reviews (7 of 7) All indexed reviews: https://appshunter.io/ios/app/knf-solutions/id1224969180/reviews.md ### 4/5 — Quick reference *2021-10-18* Really great for mixing solutions and to check some instructions and storage data when making inputs. Has recipes under the quick help menu. Could use some spelling refinement in those recipes, and some more information on the soap calculator(dilution rates for wetting agent) would be really helpful, but I love the app and use it a couple of times per week. ### 5/5 — Next level + OG feeding *2020-08-11, version 4.2.2* Thank you for the YouTube vids, I can’t wait to use this app to start producing my own food for my foods ;) ### 3/5 — Featureless *2020-03-01* For $4 you would think the app comes with more than a calculator without instructions on how to use. There’s almost nothing to this app. It could be built in an excel sheet in a few minutes. ### 5/5 — Support KNF! *2019-08-23* This app is handy and I think KNF classes should be mandatory for every person in the world... Even if you know the math, buy this app and support these folks as they are truly spreading an important message! Note: In the soap calculator KOH is listed as an ingredient but is not explained on the acronyms help page. ### 5/5 — Easy to use *2019-08-03* Super simple if you’re not looking to convert too much. We Run a 5 gallon bucket and a 100 liter bucket. Using this makes it super simple!! Here’s some other important conversions: 1 us teaspoon: 4.93 ml 1 us tablespoon: 14.78 ml 1 us fluid oz: 29.57 ml 1 us cup: 240 ml 1 US pint: 473.17 ml 1 us quart: 946.35 ml 1 us gallon: 3785.41 ml (Note: us metrics are different than imperial) Drake, you’re more than welcome to use that right by the “quick help with solutions” area. It comes in super handy!! ### 4/5 — Handy and concise *2018-06-07* Could use the addition of some images and videos. But overall a simple collection of info and easy to use measurement calculator. ### 5/5 — Great, thanks Eric! *2018-05-06, version 4.0.0* Really appreciate all your content and teaching us this information for free on YouTube. You're an amazing human being! ## Frequently asked questions about KNF Solutions ### What is KNF Solutions? KNF Solutions is a paid app designed to help users accurately calculate natural farming solutions. It provides recipes and dilution ratios for various Korean Natural Farming inputs. ### How much does KNF Solutions cost? KNF Solutions is a paid application priced at $3.99. ### What natural farming solutions can I calculate with KNF Solutions? You can calculate solutions for Seed Soak, Leaf Growth, Flower, Fruit, and Enhanced Ripening. It also includes recipes for Oriental Herbal Nutrient (OHN), Fermented Plant Juice (FPJ), Brown Rice Vinegar (BRV), Fish Amino Acid (FAA), Water-soluble Calcium Phosphate (WCP), Water-soluble Calcium (WCA), Lactic Acid Bacteria (LAB), and Seawater (SEA). ### What devices support KNF Solutions? KNF Solutions is available for iPhone and iPod devices. ### How often is KNF Solutions updated? The latest version of KNF Solutions is 4.2.2, which was last updated on August 7, 2019. This indicates infrequent updates. ### What is the age rating for KNF Solutions? KNF Solutions has an age rating of 4+, making it suitable for a wide range of users. ### Does KNF Solutions have ads? No, KNF Solutions does not contain advertisements. ### What is the user sentiment for KNF Solutions? KNF Solutions has received positive feedback, with an average rating of 4.7 stars from 11 ratings. ## Version history (last 5 releases) ### 4.2.2 — 2019-08-07 Added CheapKNF Soap Calculator - now make soap at home with this easy calculator Display layout fixes. ### 4.2.0 — 2018-05-21 minor adjustments to solution accuracy ### 4.1.0 — 2018-05-18 updated formulas to be more accurate based on advanced training. best part about the app is you get the most current information delivered in real time! ### 4.0.0 — 2018-04-27 updated the look and feel of the app to be more friendly. ### 3.0.0 — 2017-11-28 Greatly expanded help section Compatibility with iOS 11 ## More apps by Eric Weinert - [Mahina Hawaiian Moon Calendar](https://appshunter.io/ios/app/mahina-hawaiian-moon-calendar/id1254840161) - [Sausage Helper](https://appshunter.io/ios/app/sausage-helper/id6569242956) - [Balanced Stones](https://appshunter.io/ios/app/balanced-stones/id6751100082) All apps by Eric Weinert: https://appshunter.io/developer/933153744 ## Related topics [knf solutions](https://appshunter.io/ios/topics/knf-solutions) · [knf calculator](https://appshunter.io/ios/topics/knf-calculator) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-25.*