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 381–400 of 1,000 ranked alternatives.

  1. HourHack app icon

    HourHack

    Rosenbergs LLC

    Calculate time between two dates

    Calculate time differences between two times or dates. Display results in hours, minutes, or days. Input dates or times directly for instant calculations. Simplify time tracking and event planning with precise duration measurements.

    ★ 5.010 ratingsUtilitiesFreeData updated 2026-09-06
  1. Perfboard app icon

    Perfboard

    Soft Dorothy LLC

    Electronics hobbyist utility and reference tool.

    The app provides a reference and utility for electronics hobbyists. It includes calculators for resistors and capacitors, along with tools for L.E.D.s and Ohm's law.

    ★ 5.06 ratingsReferenceFreeData updated 2026-09-23
  2. Saturation Index Calculator app icon

    Saturation Index Calculator

    Affektive Software LLC

    Calculate SI and balance pool chemistry

    Calculate pool water balance by inputting pH, temperature, total alkalinity, calcium hardness, and total dissolved solids. Determine the Langelier to assess water balance and identify issues like cloudy water.

    ★ 4.24 ratingsProductivityFreeData updated 2026-09-12
  3. Survey Toolbox app icon

    Survey Toolbox

    Kongkrit Thongrueangsri

    Calculate Azimuth and Distance

    Calculate azimuth, distance, and coordinate differences with DMS or decimal units. Check deviations and field notes. Save and share results via LINE or email.

    ★ 0.00 ratingsUtilitiesFreeData updated 2026-09-06
  4. VR Mobile - Vibration Testing app icon

    VR Mobile - Vibration Testing

    Vibration Research

    Vibration testing and engineering tools.

    The app connects to Vibration Research hardware for live vibration test monitoring. It includes engineering calculators, a strobe light, a noise SPL meter, and an accelerometer.

    ★ 4.711 ratingsUtilitiesFreeData updated 2026-09-23
  5. GoodCalc - simple calculator app icon

    GoodCalc - simple calculator

    龙 全

    Calculate, edit, and track expressions

    Perform calculations with real-time results and visible input process. Use scientific and fraction modes. Adjust decimal places and show/hide separators. Access unlimited history. Quick start with backspace and keyboard vibration or sound.

    ★ 5.08 ratingsUtilitiesFreeData updated 2026-09-06
  6. Frugal app icon

    Frugal

    Russell Leake

    Compare prices and sizes easily.

    The app helps shoppers determine the selected value by comparing prices and size. It calculates discount percentages and coupons, alleviating confusion on multiple discounts.

    ★ 5.011 ratingsFinanceFreeData updated 2026-10-17
  7. NGL Insurance Rate Calculator app icon

    NGL Insurance Rate Calculator

    Tapp Solutions, LLC

    National Guardian Life Insurance Rate

    The app calculates life insurance rates for National Guardian Life Insurance Agents. Rates are specific to the agent using the calculator.

    ★ 4.17 ratingsFinanceFreeData updated 2026-10-06
  8. DrPhos' Chemistry Pro app icon

    DrPhos' Chemistry Pro

    Monte L Helm

    Solve problems and track progress

    Solve problems with a scientific calculator that handles standard and scientific notation with significant figure control. Calculate molar masses, convert between chemical names and formulas, and balance equations.

    ★ 5.06 ratingsEducation$4.99Data updated 2026-09-06
  9. MedShift Velocity Lending app icon

    MedShift Velocity Lending

    MedShift, LLC

    Offer device financing in real time

    Sales staff can offer and price device financing directly in the customer's office. Instant pricing quotes are provided. Approvals can be completed in 30 seconds or up to 24 hours. Automated documentation is delivered.

    ★ 5.010 ratingsBusinessFreeData updated 2026-09-06
  10. Mogul System app icon

    Mogul System

    Justin Nalls

    Manage sales, track leads, and grow

    Manage leads with landing pages, surveys, and forms. Schedule appointments via calendars and inbound phone systems. Access a full suite of tools for funeral homes, preneed agencies, and churches. Track sales and marketing activities in one platform.

    ★ 5.05 ratingsUtilitiesFreeData updated 2026-09-06
  11. Calc VAT – UK VAT Calculator app icon

    Calc VAT – UK VAT Calculator

    Aaron Wardle

    Calculate VAT faster than before.

    The app provides a VAT calculator for faster calculations. Users enter an amount and select VAT options to see a breakdown.

    ★ 2.45 ratingsBusiness$0.99Data updated 2026-09-11
  12. x2y app icon

    x2y

    Joseph Cieplinski

    Calculate aspect ratios for resizing

    Calculate image and video dimensions based on aspect ratios or percentages. Input original size or ratio and desired dimension. Output new width, height, and percentage. Auto-adjust for resizing tasks.

    ★ 5.08 ratingsProductivityFreeData updated 2026-09-08
  13. HVAC Load Plus app icon

    HVAC Load Plus

    Carmel Software Corporation

    Calculate heating and cooling loads

    Perform heating and cooling block calculations for small commercial and residential buildings. Access a 1000+ city weather database and construction type data. Input project details to generate estimates based on industry standard methods.

    ★ 2.85 ratingsProductivity$24.99Data updated 2026-09-08

How we rank alternatives

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