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 261–280 of 1,000 ranked alternatives.
Asphalt Calculator One
Yevhen Kniaziuk
Calculate volume and tonnage
Determines cubic yards and hot mix tonnage. Input length, width, and thickness in feet or meters. Choose units for imperial or metric. Calculate results with a single tap.
Inflation Calculator — TCM
MZSanford, LLC
Calculate US dollar value changes easily.
The app calculates the change in value of the US dollar over time. It offers a simple interface for inflation calculations and features for classic movie fans.
HK Salaries Tax Calculator
Conpak CPA Limited
Calculate taxes and file returns
Calculate Tax, Property Tax, and Profits Tax for individuals and companies. Select tax years from 2024/25 to 2019/20. Identify optimal savings options for tax returns. Submit tax assessments digitally.
AircraftPower
James Petty
Engine performance calculations for aircraft.
The app calculates and displays the performance of 74 Continental and 108 Lycoming normally-aspirated engines. It offers a graphic display illustrating manual construction methods for determining altitude performance based on user inputs.
Auto Loan Calculator %
JanoGroup LLC
Calculate monthly payments and terms
Calculate monthly payments, total interest, and payoff date by entering vehicle price, down payment, interest rate, and other details. View detailed payment breakdowns and interactive charts. Support trade-in value, sales tax, and additional fees.
Simple Hex Calc
Hiroki Ishiura
Calculate, logic, memory, shift
Perform arithmetic, logical, and memory operations. Calculate modulo, bit shifts, and bitwise functions. Save and load values. Switch number bases and modes via device rotation or screen edges.
Circuit Playground
Adafruit Industries LLC
Calculate component values and resistor codes
Calculate component values for Op Amp, 555, RC Filter, and Resistor Divider circuits. Decode resistor and capacitor codes. Compute power, resistance, current, and voltage using Ohm's Law and Power Calculators.
HVAC PT Chart
Carmel Software Corporation
Look up pressure and temperature values
Allows users to look up pressure and temperature values for 100+ refrigerants. It supports both bubble and dew point calculations for azeotropic mixtures. Users can email PT lists, refrigerant properties, and input results.
Installer App
Danfoss A/S
Digital toolbox for heating professionals.
The app provides professionals with tools for radiator presetting, product finding, project management, and hydronic balancing. It also includes calculators for flow/pressure, floor heating, and burner conversion.
WALT Calculator
Jeff McClay
Weather, location, and target computations.
The app offers a density altitude calculator for weather comparisons and a field elevation calculator. It also includes a geographic coordinates converter and a geographic distance calculator.
Area Volume Calculator
Trelleborg Sealing Solutions Germany GmbH
Calculate , perimeter, , and weight
Calculate , perimeter, , and weight for 170+ geometric shapes. Input measurements or use calculation methods for missing values. Select materials like metal, wood, or liquid to determine weight. Search shapes by typing or swipe through categories.
VMI Edge Dredge Calculator
VMI, Inc.
Calculate production and verify pump output
Calculate dredging production by inputting variables like percent solids, specific gravity, pipe size and length, LSVF, slurry viscosity, and pump wear. Estimate project costs and verify pump performance. Export results for reporting.
DHF Precious Metal Calculator
David H. Fell & Company, Inc.
Estimate precious metal scrap value easily.
The app estimates the value of scrap metal using London PM fix market prices. Users select the precious metal, purity, and enter the weight to calculate the value.
How we rank alternatives
Apps are ranked by functional similarity, category fit, rating confidence, and popularity.