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★ (9.6K) | Yes | Yes | Aug 2026 |
| 4 |  | Free | 4.5★ (8.6K) | Yes | Yes | Aug 2026 |
| 5 |  | Free | 4.8★ (113K) | No | Yes | Aug 2026 |
| 6 |  | Free | 4.0★ (6.3K) | No | Yes | Aug 2026 |
| 7 |  | Free | 4.6★ (117K) | Yes | Yes | Aug 2026 |
| 8 |  | Free | 4.4★ (6.6K) | Yes | Yes | Aug 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.
This application uses GPS to accurately measure land areas and distances. It offers tools for calculating acreage, drawing boundaries on maps, and measuring perimeters. Users can also subtract areas and track their speed while measuring.
Identify plants with a photo, receive personalized care schedules, and get help diagnosing plant problems. Track your plant's progress and learn from a community of plant lovers.
Instantly identify plants, diagnose diseases with AI, and receive personalized care reminders. This app acts as your personal botanist, offering detailed plant information, treatment plans, and safety checks for pets. Keep your indoor and outdoor gardens thriving with expert guidance.
Instantly identify plants, flowers, and trees from a photo. Diagnose plant diseases, receive expert care advice, and set personalized watering and feeding schedules. Access tools like a light meter and pot calculator to ensure your plants thrive.
Instantly identify plants, flowers, and mushrooms by taking a photo or uploading an image. Get detailed care tips, diagnose diseases, and receive reminders for watering and fertilizing. Features include a light meter, expert advice, and warnings for toxic plants.
Easily estimate landscaping materials like gravel, soil, mulch, and concrete. Supports multiple units of measurement for accurate project planning. Ideal for DIYers and professionals.
This app simplifies home gardening with personalized guidance and expert tips for growing vegetables, fruits, and herbs. It offers customized planting calendars, garden layout planning, and step-by-step growing information. Get seasonal care tips, reminders for watering and fertilizing, and even identify plant diseases with a photo.
This application provides GPS field guidance for agricultural machinery operators on an iPhone. It helps maintain consistent passes, reduce overlap, and improve efficiency during fieldwork. A subscription unlocks full features, with a 7-day free trial available.
A straightforward calculator app designed for everyday math, school, budgeting, and shopping. It offers essential functions, a clear interface with large buttons, and a history log for reviewing past calculations. Advanced features include memory functions, percentage calculations, and multi-window support for efficient workflow.
This tool simplifies peptide dosage and reconstitution calculations. It accurately determines injection volumes and the correct amount of water for mixing, converting results to insulin syringe units. Designed for researchers and wellness enthusiasts, it ensures precise and confident peptide administration.
Identify unknown plants, diagnose their health issues, and receive expert care advice. This AI-powered assistant provides instant answers to your plant-related questions, offering detailed information and practical tips for successful plant growth.
Identify your plants, diagnose issues like brown leaves, and receive personalized care instructions. This app helps you determine watering schedules, optimal lighting, and provides timely reminders to keep your plants thriving.
Easily estimate the amount of mulch and landscaping materials needed for your projects. Supports various bed shapes and measurement units, providing results in multiple volume units and bag counts.
This app helps calculate fertilizer needs for various applications, supporting both granular and liquid types with flexible unit inputs. It's designed for anyone managing lawns, gardens, or larger agricultural areas.
This app helps you care for your plants by identifying diseases, setting care reminders, and providing a wealth of gardening knowledge. It offers tools to calculate watering needs, measure light, track expenses, and even identify unknown plants from photos.
This AI-powered gardening assistant helps you identify plants, diagnose diseases, and provides personalized care advice. It offers reminders, a plant finder, and alerts for toxic plants to ensure your plants thrive and your home is safe.
This app assists with landscape design by providing calculations for project supplies, measurements, and dripline placement. It accounts for variables like soil type, plant needs, and irrigation pressure to determine emitter spacing and irrigated area. Results can be saved and recalculated, ensuring adherence to official standards.