Comparison

Electrical Calculator vs RuiHome

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Electrical Calculator

This app provides over 65 essential electrical calculation tools and formulas for engineers, students, and professionals. It supports both USCS and SI units and includes features like resistor color code conversion and upgraded voltage drop calculations aligned with industry standards.

Highlights
  • Over 65 electrical calculation tools
  • Resistor color code calculators
  • Upgraded voltage drop calculations
  • Wire size calculations
  • Series/parallel circuit calculations
  • Energy cost calculator
  • Unit conversions
Features
Read full description

Electrical Calculator is your all-in-one app for fast, accurate, and essential electrical calculations. Packed with 60+ powerful tools, it's designed for electricians, electrical & electronics engineers, and students. Every calculator includes built-in formulas and supports both USCS and SI units. What's New: • Category filters — find any calculator in seconds with purpose-based groups: Ohm's Law, Wiring & NEC, Power & Phase, Motors, Transformers and more • Refreshed design with a cleaner look Core Calculators: • Voltage, Current, Resistance & Power (Ohm's Law) • kVA to Amps / Amps to kVA (Single & Three Phase) Electrical System Calculators: • Voltage Drop Calculator (per NEC/IEEE standards) • Wire Size Calculations (AWG & mm²) • Power, Current & Horsepower (DC, Single & Three Phase) • Efficiency & Power Factor Calculators • Neutral Current (3-Phase Unbalanced Loads) Transformers & Generators: • Transformer Current, Voltage & Resistance Imbalance • DC Generator Reactance & Impedance: • Inductive & Capacitive Reactance • Resonant Frequency • Characteristic Impedance (Parallel & Coaxial) • Impedance Calculators (R-L-C combinations) Series / Parallel Calculations: • Resistance, Inductance & Capacitance (Series & Parallel) • Unknown Resistance & Capacitance (Series & Parallel) Components: • Resistor Color Code — resistance to color bands and back • Inductor & Capacitor Sizing Formulas Lighting & Energy Tools: • Luminous Intensity, Luminous Flux & Solid Angle • Energy Cost Calculator • Energy Stored in Resistors, Inductors & Capacitors Conversions: • Star ↔ Delta Conversion • Field Strength & Electrical Potential • Resistance, Resistivity, Conductance & Conductivity • Capacitance, Inductance & Charge Density Converters • Power Converter Key Features: • Category filters for fast navigation • Flexible unit selection for inputs and outputs • Full iPad support with split view • Dark Mode and 12 languages • Clean interface for the field, the shop, and the classroom

About

RuiHome

Features
Read full description

Professional version AI intelligent butler It is a smart device management tool, through the APP can quickly connect devices, manage devices, deploy scenarios, and quickly and simply realize a truly intelligent life Software highlights: Equipped with micro-SaaS applications, localized control

Screenshots

Electrical Calculator4 screens
RuiHome4 screens

Verdict

The call

The clearest difference is price: RuiHome at Free against Electrical Calculator's $3.99. RuiHome also leads on iOS requirement (13.0 vs 17.6). On ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

RuiHome is free to download; Electrical Calculator costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Scorecard2 real differences · 8 level
Electrical Calculator versus RuiHome: the parameters behind the verdict, then further details
ParameterElectrical CalculatorRuiHome
Price$3.99Free — better
Rating4.6 (462 ratings) — better—
Positive reviews53.3% of reviews—
Number of ratings462 — better—
Update frequencyEvery 4 months—
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, Mac — betteriPhone, iPod
Requires iOS17.613.0 — better
Further details — not scored
Size18 MB192 MB
Age rating4+12+
DeveloperV PUGAZHENTHI中山市睿晶智能科技有限公司

Bugs and requests

Electrical Calculator

Reported bugs

3 issues
  • Annoying popup for app update
  • Converter not working
  • App not working on older iPhone models

Requested features

2 requests
  • Include impedance calculators
  • Improve metric region compatibility for AWG cables

RuiHome

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Electrical Calculator

No in-app purchases

None

RuiHome

No in-app purchases

Questions

Is Electrical Calculator free?
Electrical Calculator costs $3.99, with no in-app purchases.
Is RuiHome free?
RuiHome is free to download, with no in-app purchases.
Do Electrical Calculator or RuiHome have ads?
Neither Electrical Calculator nor RuiHome shows ads.

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