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 141–160 of 1,000 ranked alternatives.

  1. Pipe Flow Gas Pipe Diameter app icon

    Pipe Flow Gas Pipe Diameter

    Daxesoft Ltd

    Calculate for rate and pressure loss

    Calculate minimum for gas based on rate and pressure loss. Use multiple equations including AGA, Panhandle A, and Weymouth. Automatically adjust for gas density with Ideal Gas Law and CNGA compressibility factor. Input parameters and view results.

    ★ 4.73 ratingsUtilitiesFreeData updated 2026-09-06
  2. HVAC Quick Load app icon

    HVAC Quick Load

    Carmel Software Corporation

    HVAC load calculations for buildings.

    The app performs rule-of-thumb HVAC load calculations for various building types. Users input building area and occupants to determine heating, cooling loads, and air flows.

    ★ 3.33 ratingsProductivity$6.99Data updated 2026-11-03
  3. Steel Weight Calculator App app icon

    Steel Weight Calculator App

    Valaji Global

    Calculate instantly

    Calculate based on dimensions and material type. Input length, width, and thickness. Select grade for accurate results. Export calculations and share data directly.

    ★ 4.753 ratingsUtilitiesFreeData updated 2026-09-06
  1. Peirce Phelps HVAC Pro+ app icon

    Peirce Phelps HVAC Pro+

    Watsco, Inc.

    Access product info and manage orders

    Access product information and inventory details for systems. Search by system needs to find AHRI matched systems. Check real-time branch availability. Link online account to view prices, add to cart, and track orders.

    ★ 4.854 ratingsProductivityFreeData updated 2026-09-21
  2. Pipe Flow Gas Pressure Drop app icon

    Pipe Flow Gas Pressure Drop

    Daxesoft Ltd

    Calculate loss with isothermal equations

    Calculate loss in gas pipelines using compressible isothermal equations. Input parameters to determine friction loss and fitting loss.

    ★ 4.711 ratingsUtilitiesFreeData updated 2026-09-06
  3. Mila's Volume Converter app icon

    Mila's Volume Converter

    Scott DeSapio

    Convert units of instantly

    Convert between common measurements such as milliliters, liters, cups, pints, quarts, and gallons. Input a value and select units to switch between them. Save frequently used conversions for quick access.

    ★ 4.8106 ratingsUtilitiesFreeData updated 2026-09-08
  4. Ohmulator app icon

    Ohmulator

    Armchair Engineering

    Calculate voltage, current, and resistance

    Calculate electrical circuit values by entering two known variables (current, resistance, voltage, or power). Adjust units dynamically for accurate results. Display total resistance and power in the circuit.

    ★ 4.779 ratingsUtilities$0.99Data updated 2026-09-08
  5. Earthquake Alert - Seismic app icon

    Earthquake Alert - Seismic

    婷 张

    Monitor earthquakes and track real-time data

    Monitor earthquakes with real-time updates and GPS compass maps. Display professional data including altitude, orientation, air pressure, and coordinates. View environmental metrics like humidity and temperature.

    ★ 4.482 ratingsUtilitiesFreeData updated 2026-09-06
  6. RaceTools app icon

    RaceTools

    MirzaWorks LLC

    Calculate ethanol goals and track fuel efficiency

    Ethanol Calculator allows users to determine the mix of pump gas and ethanol gas needed for a desired blend by entering specific details. Users can review past calculations for quick recalculation.

    ★ 4.978 ratingsUtilitiesFreeData updated 2026-09-06
  7. Concrete Calculator Elite app icon

    Concrete Calculator Elite

    Cyberprodigy LLC

    Calculate volumes and quantities

    Helps estimate materials for various shapes. Users input dimensions to calculate volume and quantity. Features include slab, column, and post calculations. Saves results for future reference.

    ★ 4.9125 ratingsUtilities$6.99Data updated 2026-09-08
  8. Harbison-Fischer app icon

    Harbison-Fischer

    ChampionX Corporation

    Adjust pump settings and calculate output

    Adjust pump parameters like size, stroke length, and strokes per minute to calculate production output in imperial or metric units. Monitor maximum linear stroke velocity to ensure it does not exceed sucker rod fall speed.

    ★ 4.04 ratingsBusinessFreeData updated 2026-09-14
  9. Watts Amps Volts  Calculator app icon

    Watts Amps Volts Calculator

    Pro Certs Software Ltd

    Calculate , , and

    Calculate electrical power for single phase systems by converting between , , and . Input values to solve for unknowns. Support for three phase calculations including kilowatts, , , and power factor.

    ★ 4.450 ratingsUtilitiesFreeData updated 2026-09-08
  10. XClip - Toolbox Keyboard app icon

    XClip - Toolbox Keyboard

    祥 王

    Paste text, manage clips, calculate on

    Allows users to manage clipboard history and predefined text snippets. Quickly insert saved text or clipboard content via . Includes a built-in calculator for input fields. Runs offline with no third-party components.

    ★ 4.911 ratingsProductivityFreeData updated 2026-09-06
  11. Heating & Cooling HVAC Pro+ app icon

    Heating & Cooling HVAC Pro+

    Watsco, Inc.

    Access product info and tools anytime

    Link to your & Supply account to view pricing, order status, and real-time product availability at your preferred branch. Access tools for managing orders and tracking inventory across multiple locations.

    ★ 4.845 ratingsProductivityFreeData updated 2026-09-14
  12. Thermodynamics Calculator app icon

    Thermodynamics Calculator

    V PUGAZHENTHI

    Engineering calculations and reference tables.

    The app provides 44 thermodynamics and heat-transfer calculators, along with reference tables. It allows users to solve for any variable and switch between SI and USCS units instantly.

    ★ 4.030 ratingsUtilities$1.99Data updated 2026-09-29

How we rank alternatives

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