Apps Like Quel for iPhone and iPad
Ranked alternatives
Showing 21–40 of 1,000 ranked alternatives.
Electrical Engineering - lite
V PUGAZHENTHI
Calculate voltage, current, and resistance
Calculate values using voltage, current, resistance, and power formulas. Access single and three phase calculators, horsepower tools, and unit converters. Unlock additional features with an in- purchase.
AC Calculator Lite
Melchisedec Martinez Rodriguez
Calculate BTU, convert units, compare systems, estimate
Calculate BTU/h capacity and determine recommended equipment types. Convert between BTU, kW, Kcal, and Tons. Check current price estimates and compare inverter versus conventional energy consumption. Unlock advanced features through in- purchases.
Duct Calculator Elite
Cyberprodigy LLC
Calculate size, velocity, and pressure drop
™ lets users input airflow, velocity, or friction to determine size. Calculate pressure drop and flow rate. Input dimensions for custom shapes. Export results and save calculations.
Gas Volume Calc
Kelly Gayneaux
Calculate gas flow with orifice meter data
Calculate gas flow through an orifice meter using tube and plate dimensions. Determine if measurements fall within Beta Ranges. Input values for diameter, pressure, and temperature. Display calculated flow rate and Beta Ratio.
Unit Converter: Mila's Tools
Scott DeSapio
Convert units across 16 categories
Convert units across 16 categories with instant results. Switch between metric, imperial, and other systems. Calculate conversions for length, weight, temperature, and more. Store frequently used values for quick access.
kVA Calculator
Pro Certs Software Ltd
Calculate kVA, kW, and Amps
Calculate kVA, kW, Amps, Volts, and Power Factor using single or three-phase formulas. Input two values to determine the third. Convert between kVA, kW, and Amps. Supports UPS, generator, and transformer calculations.
Electrical Calc Elite
Cyberprodigy LLC
Calculate loads and circuits
Calculate loads, voltage drops, and conductor sizes according to NEC codes. Verify compliance for residential and commercial projects. Access code references for 2002–2023 editions. Perform wire sizing, panel scheduling, and circuit calculations.
GasTech Calculator Pro
Maksymilian Lopatowski
Calculate gas volumes and pressures
Volume to energy converter calculates gas volume to energy with temperature and pressure adjustments. Professional pipe sizing uses BS 6891:2015 standards for accurate sizing. Includes 9+ calculators for gas engineering tasks.
Navisizer
Navien, Inc.
Size systems, calculate costs, generate specs
Calculate heating system requirements for residential and commercial applications. Input system data to determine sizing and operating costs. Generate detailed reports for job specifications and energy savings analysis.
Electric Toolkit - Calculator
Cyberprodigy LLC
Wire diagrams, pinouts, calculate electricity
Access electrical wiring diagrams for switches, fans, and outlets. Calculate grounding conductor sizes. View diagrams for 3-way switches, 4-way switching, GFCI, and more. Includes NEC 2014 to NEC 2023 standards.
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