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.
Greenheck Toolbox screenshots
Ranked alternatives
Showing 381–400 of 1,000 ranked alternatives.


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.


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.

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.

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.

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.



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.


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.

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.

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.

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.

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.

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.


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.

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.
How we rank alternatives
Apps are ranked by functional similarity, category fit, rating confidence, and popularity.