Comparison

Electrical Calculator vs Hopee

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
Currently charting
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

Hopee

Features
Read full description

HOPEE è l’app che ti permette di entrare e vivere una Comunità Energetica Rinnovabile in modo semplice. Se non fai ancora parte di una CER, puoi partire da qui: esplori le comunità disponibili, le confronti e scegli quella più adatta a te. L’ingresso è immediato e pensato per essere accessibile a tutti. Una volta entrato, HOPEE diventa il punto di controllo della tua energia. Puoi monitorare i tuoi consumi domestici in modo chiaro, capire quanto stai consumando e quando lo fai. Tutti i dati sono semplificati, senza tecnicismi, per darti una visione immediata. Allo stesso tempo, puoi vedere cosa succede nella tua Comunità Energetica: quanta energia viene prodotta, quanta viene consumata e quanta viene condivisa tra i membri. Hai sempre sotto controllo l’andamento della tua CER. All’interno dell’app trovi anche tutte le informazioni della comunità di cui fai parte, così da avere una visione completa e trasparente. HOPEE ti aiuta anche a migliorare: attraverso suggerimenti intelligenti, ti indica quando e come consumare per sfruttare al meglio l’energia disponibile nella tua comunità. Con HOPEE l’energia non è più solo un consumo individuale, ma diventa un’esperienza condivisa. Scarica l’app ed entra nella tua Comunità Energetica Rinnovabile.

Screenshots

Electrical Calculator4 screens
Hopee4 screens

Verdict

The call

The clearest difference is price: Hopee at Free against Electrical Calculator's $3.99. Hopee also leads on update cadence (every 2 weeks vs every 4 months). Electrical Calculator's advantage is chart position (#179 vs unranked) and device support (3 vs 1). On ads, in-app purchases and iOS requirement 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

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

UpkeepUpdate frequency

Electrical Calculator ships an update every 4 months, Hopee every 2 weeks. The most recent releases landed on September 27, 2026 and September 14, 2026 respectively.

Scorecard4 real differences · 7 level
Electrical Calculator versus Hopee: the parameters behind the verdict, then further details
ParameterElectrical CalculatorHopee
Price$3.99Free — better
Rating4.6 (462 ratings) — better—
Positive reviews53.3% of reviews—
Number of ratings462 — better—
Update frequencyEvery 4 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
Best chart rank#179 — better—
DevicesiPhone, iPad, Mac — betteriPhone
Requires iOS17.6 — better18.0
Further details — not scored
Size18 MB41 MB
Age rating4+17+
DeveloperV PUGAZHENTHIJanus SRL (IT)

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

Hopee

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Electrical Calculator

No in-app purchases

None

Hopee

No in-app purchases

Questions

Is Electrical Calculator free?
Electrical Calculator costs $3.99, with no in-app purchases.
Is Hopee free?
Hopee is free to download, with no in-app purchases.
Do Electrical Calculator or Hopee have ads?
Neither Electrical Calculator nor Hopee shows ads.
Which is updated more often, Electrical Calculator or Hopee?
Electrical Calculator ships an update every 4 months, and Hopee every 2 weeks. Most recently, Electrical Calculator was updated on September 27, 2026 and Hopee on September 14, 2026.

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