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
Scientific with and conversion capabilities. Perform complex calculations, convert currencies, and switch units. Review and reuse calculation history. Use landscape mode for efficient input and history viewing.
Calculate parameters using 90 tools. Input values to determine dry bulk density, specific gravity, flow rate, head loss, pressure, and velocity. Convert units and export results. Sync data across devices.
Calculate and organize numerical data with customizable named entries. Perform multiline calculations, edit lines, and assign currency or units. Automatically sum entries and hide the keyboard for a list view.
Calculate time, power, torque, cutting force, metal removal rate, and chip thickness for operations like milling, drilling, turning, and tapping. Select materials and input parameters for accurate results.
Calculate concrete quantities for floor slabs and foundations including aggregate, sand, and cement. Estimate materials for DIY projects and building trades. Include a VAT calculator and a brain-training game.
Calculate measurements for grading purposes. Input dimensions and alignment data to determine optimal . Track grades, storage conditions, and collection progress. Export and share grading reports.
The app provides vibration severity testing for rotating machinery according to ISO 10816-03. Users input machine power, foundation type, and RMS vibration velocity to determine the operating condition, displayed in color-coded zones.
Calculate times based on entered . Adjust by +/- 1 minute using bottom buttons. Change race distance by tapping the top bar. Input desired and distance to estimate total time.
The app calculates balancing weights and angular positions for rotating machinery. It offers single-plane and two-plane balancing techniques, angular mass distribution calculation, and permissible residual unbalance determination.
Optimize air systems with unit conversions for pressure, volume, and temperature. Calculate pressure drop, condensate formation, and standard cubic meters according to DIN 1343 and ISO 2533. Determine optimal receiver size and system efficiency.
Determines cubic yards and hot mix tonnage. Input length, width, and thickness in feet or meters. Choose units for imperial or metric. Calculate results with a single tap.
A hand sanitizer solution that complements decor with customizable designs. Refillable liquid ensures consistent supply. Tracks usage and alerts when low. Syncs with smart home systems for automated dispensing.