Apps Like NPKalc - Fertilizer Calculator for iPhone and iPad
Calculate doses and units
Calculate requirements for granular and liquid types using various unit measurements. Input soil test results and desired nutrient levels. pplication rates for lawns, gardens, and crops. Export results for record-keeping.
by Barton Cone★ 4.39 ratingsUtilitiesFreeData updated 2026-09-06
Convert temperatures between Celsius, Fahrenheit, Kelvin, Delisle, Newton, Rankine, Réaumur, and Rømer. Enter a value and select the unit to convert from. Display results in the desired unit.
Perform basic and advanced calculations with large, illuminated buttons. Use the scientific for 30 functions. Convert units, calculate loans, and determine tips. Includes standard, scientific, unit converter, loan, and tip calculators.
With symbolic algebra, equation solving, and calculus functions. Supports fractions, repeating decimals, and high-precision numbers. Displays results as simplified expressions or numerical values.
Calculate stair dimensions for Straight, L-Shaped, U-Shaped, Spiral, Winder, and Corner Deck configurations. Visualize designs in 3D. Measure steps, risers, and tread depths. Export measurements and save projects.
Perform complex calculations using ten built-in calculators. Access ten financial worksheets for budgeting, loans, and investments. Input formulas, view results, and save calculations. Export data as PDF or text. Switch between light and dark modes.
Calculate pip values for Forex currency pairs. Input trade details to determine pip worth. Assist with risk management and trade decisions. Provide accurate calculations for lot sizes and currency pairs.
Measure areas and distances on maps by placing points and calculating the between them. Save and edit measurements. Switch between different units for distance and . Calculate total of a route or individual segments.
Log in and log out times to total . Enter hourly pay rate to view total amount due. Email or download results for record-keeping. Select rate mode to input different rates and comments for multiple jobs.
The app simplifies soil sampling for growers and service providers, offering lab results, fertilizer recommendations, and controller files. It provides unlimited access to specialists, aerial imagery, and a complete soil testing history.
Calculate , topsoil, dirt, or landscaping material needed for projects. Input dimensions for rectangular, circular, or custom areas. Enter measurements in inches, feet, yards, centimeters, or meters.
Calculate size for round or rectangular ductwork. Adjust airflow, diameter, width, or height using sliders. Enter values directly for precise measurements. Lock friction calculations for accurate results.
Calculate circuits, convert units, test experiments
Solve electrical problems by calculating voltage, current, and resistance. Input values to determine unknown variables. Perform unit conversions and conduct experiments. Store and retrieve calculation results.
Perform calculations with basic arithmetic, fractions, and advanced functions. Store calculation history for review. Switch between light and dark modes. Use HD display for clear results. Adjust layout for easier input.
Calculate pip values for forex trades by entering account currency, currency pair, and trade size. Display pip worth in real-time. Provide risk warnings for forex trading.
Calculate annual profits by inputting revenue and expenses. Determine sales margins with customizable inputs. Track trends over time. Export calculation results for record-keeping. Set reminders for reviews.
Calculate ratios by entering the desired ratio and bottle size. Determine the exact amounts of water and solution needed. Supports litres and millimetres with future unit additions. Share results or provide feedback through in- options.
Helps estimate materials for various shapes. Users input dimensions to calculate volume and quantity. Features include slab, column, and post calculations. Saves results for future reference.
Calculate the energy of airsoft pellets in joules to ensure compliance with legal limits. Input velocity and weight to determine power levels. Set custom thresholds for safe gameplay. Export results for record-keeping.