Greenheck Toolbox app icon

Apps Like Greenheck Toolbox for iPhone and iPad

Calculate fan laws and size ducts

Fan Law Calculator allows users to input rpm, cfm, static pressure, and horsepower. Modifying one value recalculates the others. Ductulator helps size HVAC ducts by inputting shape, dimensions, air temperature, elevation, and roughness.

by Greenheck Fan Corporation★ 3.03 ratingsUtilitiesFreeData updated 2026-09-08

Greenheck Toolbox screenshots

Ranked alternatives

Showing 361–380 of 1,000 ranked alternatives.

  1. iSlipstick app icon

    iSlipstick

    Sam Virgillo

    Electronic formula calculators and value converters.

    The app provides electronic formula calculators and value converters. It includes Ohm's law, Op-Amp gain, LC circuit, impedance, and resistor calculators, along with metric and imperial unit conversions.

    ★ 5.03 ratingsProductivityFreeData updated 2026-09-11
  1. Uniform Flow Light app icon

    Uniform Flow Light

    YamaSoftPLanning,Ltd.

    Calculate water channel flow parameters easily.

    The app calculates parameters for water channels with constant flow, slope, and shape. It includes calculations for surface width, water area, wetted perimeter, hydraulic radius, and velocity.

    ★ 0.00 ratingsBusinessFreeData updated 2026-09-22
  2. DrPhos' Molar Mass app icon

    DrPhos' Molar Mass

    Monte L Helm

    Calculate and elemental composition

    Calculate and elemental composition for chemical formulas. Input formulas with subscripts, parentheses, and nested groups. Display total and individual element contributions. Perform elemental analysis for problem-solving and educational purposes.

    ★ 5.09 ratingsEducation$0.99Data updated 2026-09-06
  3. Geometry Cheat Sheet app icon

    Geometry Cheat Sheet

    Neil Shweky

    Calculate geometry formulas without math.

    The app calculates geometric formulas for users. Users input numbers and the app provides answers for circles, rectangles, triangles, spheres, cylinders, cones, and more.

    ★ 4.310 ratingsUtilitiesFreeData updated 2026-11-14
  4. Ug Calc app icon

    Ug Calc

    Lance Henderson

    Calculate Geometric Unsharpness Easily Now

    The app calculates Geometric Unsharpness (Ug) for industrial radiographers. Users input distances and source size to determine the Ug value.

    ★ 5.05 ratingsUtilitiesFreeData updated 2026-09-19
  5. Electronics Reference Toolkit app icon

    Electronics Reference Toolkit

    Ha Do Thi Thu

    Calculate resistors, voltage, and capacitance

    ElecKit provides tools for calculations. Users can calculate resistor values with 4/5 band codes and tolerance. It includes Ohm’s Law functions for voltage, current, resistance, and power.

    ★ 4.98 ratingsUtilitiesFreeData updated 2026-09-06
  6. Herz Stromax R app icon

    Herz Stromax R

    Aleksandar Jovanovic

    HVAC system balancing valve calculator tool.

    The app calculates optimal valve presets for HVAC systems. It visually represents operational conditions, replacing manual data sheet calculations.

    ★ 5.01 ratingsBusinessFreeData updated 2026-10-28
  7. KlimaKonfigurator! app icon

    KlimaKonfigurator!

    KlimaShop! GmbH

    Calculate room air conditioning needs easily.

    The app calculates approximate air conditioning needs for a room. It uses room size, ceiling construction, window area, people, and heat-emitting equipment as input data to determine required cooling capacity in Watts or BTU/h.

    ★ 1.33 ratingsUtilitiesFreeData updated 2026-09-11
  8. Gas Pipe Sizing Calculator app icon

    Gas Pipe Sizing Calculator

    Mr Combi Sales Ltd.

    Calculate correct gas pipe sizes easily.

    The app helps users select the right size pipes for boiler installations. It calculates the total equivalent length, minimum pipe diameter, and pressure drop for copper, steel, and PE pipes.

    ★ 4.01 ratingsProductivity$4.99Data updated 2026-10-04
  9. Fractions Pro app icon

    Fractions Pro

    Intemodino Group s.r.o.

    Calculate with fractions and decimals.

    The app performs mathematical, engineering, scientific, and technical calculations. It handles fractions, mixed numbers, decimals, and integers with various functions including trigonometric operations and constants.

    ★ 2.914 ratingsProductivity$6.99Data updated 2026-10-23
  10. Electrical Calculation Tools app icon

    Electrical Calculation Tools

    Kantaben Gorasiya

    Calculate voltage, current, and power

    Calculate values using Ohm’s Law with inputs for voltage, current, and resistance. Determine power with formulas for watts, amps, and volts. Convert between units like volts, amps, and kilowatts. Store frequently used values for quick access.

    ★ 0.00 ratingsUtilities$1.99Data updated 2026-09-06
  11. ASHRAE DFDB Lite app icon

    ASHRAE DFDB Lite

    ASHRAE, Inc.

    Calculate pressure loss for duct fittings

    Create individual projects with custom input values and results. Calculate pressure loss for specified duct fittings. Access a database of listed fittings for accurate calculations. Save and review project data for analysis.

    ★ 1.01 ratingsBusinessFreeData updated 2026-09-06

How we rank alternatives

Apps are ranked by functional similarity, category fit, rating confidence, and popularity.