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
Perform calculations with a standard featuring extra-large buttons and functions like delete, x², √, and %. Use a scientific with 30 advanced functions. Convert units, calculate loans, and determine tips.
Perform basic and complex calculations with a clean, intuitive interface. Input numbers and operators to solve equations. Switch between different calculation modes for precision. Save frequently used equations for quick access.
Calculate parameters based on run or total run input. Support multiple units for measurements. Determine maximum and minimum step sets. Copy results to clipboard. Access all features with unlimited subscription.
Manage irrigation by setting up and calibrating OtO devices. Define watering zones and schedule maintenance. Monitor system status and adjust settings remotely.
Identify plants by snapping photos for flowers, trees, succulents, and herbs. Get species names, facts, and care tips. Detect plant diseases on leaves, stems, and soil. Receive step-by-step treatment advice for issues like spots, rot, and pests.
Calculate , base material, and sealcoat quantities for paving projects. Input dimensions in various units and receive results in tons, cubic yards, or cubic meters. Estimate material costs based on input measurements.
Convert units between metric and imperial systems including area, distance, speed, temperature, volume, time, weight, energy, and power. Calculate area, speed, distance, and volume with supported units. Switch between units quickly and accurately.
Calculate values using resistor color codes, voltage, current, and resistance formulas. Perform impedance and RLC circuit analysis. Input values to get accurate results for engineering, wiring, and circuit design tasks.
Perform complex calculations with 10 financial worksheets and 10 calculators. Switch between landscape and portrait modes. View results in decimal, fraction, or percentage formats. Save and recall previous calculations. Export data as text or PDF.
Calculate volumes for slabs, walls, and columns. Input dimensions and material types. Estimate material quantities and costs. Export results and share via email. Sync across devices for project management.
Calculate with a that supports basic and advanced functions. View calculation history for reference. Copy results to clipboard for quick use. Use split view for multitasking on iPad.
Calculate fluid rates and pressure loss in pipes. Determine diameter or maximum length based on rate and pressure drop. Find friction loss and rate using built-in formulas. Input dimensions and fluid properties for accurate results.
Calculate earnings for hourly, daily, weekly, bi-weekly, semi-monthly, quarterly, and yearly periods. Input fixed income and estimated working time to receive accurate results. Track progress over time and adjust inputs for updated calculations.
Performs basic arithmetic and scientific calculations. Save equations and results for later. Unit Converter converts units for area, length, temperature, and more. Includes tools for currency exchange, date calculations, and percentage computations.
Calculate for horizontal and vertical cylinders with flat heads, rectangular tanks, and horizontal vessels. Input dimensions and liquid height to get accurate results. Export calculations and share data directly.
Land areas using GPS and map data. Draw boundaries with swipes to calculate plot size. Save and view measurements. Share results via email or messaging. Sync with other devices for accurate tracking.
Perform complex calculations with customizable formulas and equation solving. Save and reuse calculations. Convert units and manage multiple profiles. Export results and access advanced functions like matrix operations and statistical analysis.
A and unit/currency with a clean interface. Convert between 500 units across 29 categories and 161 currencies. Customize colors and display selected units. Enter values to instantly convert between units.