211+ iOS apps curated and reviewed
Finding the right knf calculator apps can be overwhelming with so many options. We've analyzed 211+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (2) | No | No | Jul 2026 | |
| 2 |  | $3.99 | 4.7★ (11) | No | No | Jun 2026 | |
| 3 |  | Free | 4.6★ (10K) | Yes | Yes | Sep 2026 | |
| 4 |  | Free | 4.5★ (9.7K) | Yes | Yes | Sep 2026 | |
| 5 |  | Free | 4.8★ (113K) | No | Yes | Sep 2026 | |
| 6 |  | Free | 4.0★ (7.8K) | No | Yes | Sep 2026 | |
| 7 |  | Free | 4.6★ (119K) | Yes | Yes | Sep 2026 | |
| 8 |  | Free | 4.4★ (6.6K) | Yes | Yes | Sep 2026 |
This app simplifies complex calculations for natural farming inputs like BRV, FPJ, and OHN. It provides instant, accurate dilutions for various KNF and JADAM formulas, eliminating guesswork and errors in field applications. Designed for ease of use, it allows users to focus more on their plants and less on manual math.
This app helps users accurately calculate natural farming solutions for various stages of plant growth. It provides recipes and dilution ratios for common Korean Natural Farming inputs like FPJ and FAA, ensuring precise application.
This app offers a free basic and scientific calculator with an intuitive interface. It supports fractions, percentages, and advanced editing. Optional upgrades provide specialized calculators for fractions with units, polynomial and linear equation solving, graphing, and geometric shapes.
