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 201–220 of 1,000 ranked alternatives.

  1. HydroCalc Plus app icon

    HydroCalc Plus

    Transparent Blue Water LLC

    Hydraulic engineering tool for pipe calculations.

    The app calculates pressure losses in piping systems for engineers and contractors. It supports US and SI units, includes a pipe material library, and a fittings database for total system pressure loss calculations.

    ★ 5.01 ratingsProductivity$3.99Data updated 2026-10-06
  2. Notebook calculator (ge-calc) app icon

    Notebook calculator (ge-calc)

    ge-nie inc.

    Calculate, memo, edit, save

    Record calculations and automatically generate memos with formatted text. Edit and save notes directly. View calculations with clear commas and a large + button. Sync memos across devices. Share notes via email or cloud services.

    ★ 4.949 ratingsProductivityFreeData updated 2026-09-08
  3. Construction Calculator Pro #1 app icon

    Construction Calculator Pro #1

    ORYX AI INFORMATION TECHNOLOGY - FZCO

    Calculate measurements, estimate materials, layout stairs

    Calculate dimensions, convert units, and perform angle and rafter measurements. Estimate material quantities and layout stairs. Input measurements for precise calculations. Save and reuse formulas for repeated tasks.

    ★ 4.646 ratingsUtilitiesFreeData updated 2026-09-06
  1. My Physics Calculator lite app icon

    My Physics Calculator lite

    V PUGAZHENTHI

    Calculate and engineering parameters

    Calculate and engineering parameters with 134 formulas. Input values to compute force, friction, acceleration, work, power, and more. Access definitions and formulas for each calculation. First 5 calculators are free; others require in- purchase.

    ★ 4.88 ratingsEducationFreeData updated 2026-09-06
  2. RevCalc app icon

    RevCalc

    Spee-Dee Packaging Machinery, Inc.

    Tooling size for auger filler applications.

    The app calculates auger filler tooling size based on product density and target weight. Users can adjust auger size, RPM, and acceleration for fine-tuning.

    ★ 5.02 ratingsReferenceFreeData updated 2026-11-14
  3. Ohm's Law & Power Law Calculator app icon

    Ohm's Law & Power Law Calculator

    Cressall Resistors Ltd

    Calculate electrical laws and relationships.

    The app calculates Ohm's law and power law relationships. Users can fix two electrical parameters to calculate the other two, allowing for rapid "what-if" recalculations.

    ★ 4.427 ratingsUtilitiesFreeData updated 2026-10-08
  4. Carpenter Square & Stair Calc app icon

    Carpenter Square & Stair Calc

    Red Shepard LLC

    Measure, convert, and with precision

    Allows users to measure and calculate dimensions using feet, inches, and sixteenths. Input tape measure data directly for accurate conversions. Calculate angles and verify corners without manual calculations.

    ★ 4.541 ratingsUtilities$1.99Data updated 2026-09-13
  5. CNC Lathe calculator app icon

    CNC Lathe calculator

    Kunshan Nianyueri Information Technology Co., Ltd.

    Calculate arc tangents and program parts

    Calculate tangent points for arcs and generate real-time machining programs. Support cutter compensation and common part structures. Measure and program standard machining operations.

    ★ 5.04 ratingsUtilities$4.99Data updated 2026-09-20
  6. ASCO Sizing & Calculator Tools app icon

    ASCO Sizing & Calculator Tools

    Asco Valve Inc.

    Calculate flow and determine Cv values

    Calculate fluid flow or determine Cv values by selecting media and inputting data. Use actuator with Numasizing® technology for cylinder types. Access conversion calculators and find nearby distributors.

    ★ 4.03 ratingsUtilitiesFreeData updated 2026-09-14
  7. Bullet Flight M app icon

    Bullet Flight M

    Runaway Technology, Inc.

    Calculate trajectories and adjust fire solutions

    BulletFlight provides real-time ballistic solutions for shooting accuracy. Input weather data including temperature, pressure, humidity, wind speed, and direction. Calculate drop and wind drift adjustments.

    ★ 3.741 ratingsUtilities$29.99Data updated 2026-11-07
  8. Roof Calculator: Pitch, Angle app icon

    Roof Calculator: Pitch, Angle

    Phan Nhat Đang

    Calculate area and cost automatically

    Calculate area and cost based on entered dimensions or house size. Input measurements to get automatic estimates. Export results for reference and share with professionals.

    ★ 4.333 ratingsUtilitiesFreeData updated 2026-10-06
  9. DPC Tools app icon

    DPC Tools

    Diamond Plastics Corporation

    Calculate buoyancy and external load

    Buoyancy Calculator determines buoyancy force of PVC pipe during construction and post-installation. Users select pipe type from dropdowns, input specific gravity, and calculate buoyancy. Results can be printed.

    ★ 3.45 ratingsUtilitiesFreeData updated 2026-09-20
  10. Mortgage- app icon

    Mortgage-

    Horizon Business, Inc.

    Calculate payments for home purchase or refinance

    Calculate payments for home purchases or refinances. Input loan amount, interest rate, and term to determine monthly payments. Select between purchase or refinance options. Share results via email or copy the payment amount.

    ★ 4.333 ratingsFinanceFreeData updated 2026-09-08
  11. Square Feet Calculator Utility app icon

    Square Feet Calculator Utility

    Robert Winkelman

    Calculate for rectangles

    Calculate footage by entering length and width for multiple rectangles. Support measurements in , inches, or both. Export calculations as CSV for further use.

    ★ 4.821 ratingsUtilitiesFreeData updated 2026-09-11

How we rank alternatives

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