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
Calculate volume, area, and price for sawn and roundwood. Name and comment on each calculation. Attach photos for documentation. Export calculations as PDF and email them with the Pro version.
Calculate exact age with real-time updates down to seconds. Track birthdays, calculate time differences, and view live totals. Export results in multiple formats without requiring an account or internet connection.
Offers a standard and scientific with over 30 operations. It supports iCloud sync across devices. Users can add notes to calculation history and share entries. A live voice is available.
Calculate unknown parameters for right triangles, rectangles, squares, circles, and regular polygons. Input known measurements to solve for missing values. Display shapes with accurate dimensions and angles.
Calculate runtime, capacity, and energy needs using different chemistries and sizes. Convert between mAh, Wh, voltage, and other units. Compare specifications and energy requirements for various devices.
Perform basic arithmetic operations, calculate percentages, and convert units. Save frequently used equations. Use scientific functions for advanced calculations. Share results via copy and paste.
Generate random numbers and secure passwords instantaneously
Generate random numbers within any range. Create quick picks for US lotteries like Powerball and Mega Millions. Generate strong passwords with customizable length and symbols. Save and manage favorite combinations.
Calculate expected due date () and estimated gestational age (EGA) using last menstrual period (LMP) or ultrasound (USS) provided . Input dates and receive calculated results.
Calculate paving and building project costs using four tools: aggregate, asphalt, concrete column, and concrete flatwork. Input dimensions like length, width, and thickness to get estimates. Export results for reference.
Analyzes trains to identify issues. Input wheel teeth or leaves and calculate turn time, tooth passage, and other metrics. Compare results to trace frequency to pinpoint potential problems.