Electrical Formulator vs Energy Cost Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Electrical Formulator
This app provides a comprehensive suite of electrical calculation tools for design and engineering challenges. It offers hundreds of conversion and calculation options, with features to save, print, and email results. Easily access frequently used and recently accessed formulas, with all calculations automatically stored.
- Over 100 electrical formulas
- Save and organize results
- Share results via email or print
- Access most-used and recent formulas
- Supports US/Imperial and metric units
- Formula categories for batteries, motors, transformers, and more
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Electrical Formulator: Your Complete Electrical Calculation Tool Solve virtually any electrical design or engineering challenge with this powerful and intuitive electrical formulator. Packed with hundreds of conversion and calculation tools, it’s the most versatile utility in your toolkit. Save, print, or email your results. Easily access your most-used and recently used formulas. Every calculation is automatically saved for future reference. Key Features: • Instant access to over 100 professional-grade electrical formulas • Save and organize your results for later reference • Share results via email or print • Highlights your most-used and recent formulas • Designed for engineers, electricians, and energy professionals Formula Categories: Batteries • Starting motor amperage • Number of cells required • Estimated operating time Cost Calculations • Appliance and lighting energy usage • Estimated usage hours for new bulbs • Insulation payback period BTU Conversions • BTU to joules, horsepower-hr, watt-hr, calories, foot-pounds, and more Generator Calculations • DC generator output • Generator amperage and efficiency Impedance & Reactance • Resistance & reactance combinations • Inductive and capacitive reactance • Total impedance and parallel circuits Kilowatts & Joules • Convert kilowatts to BTU/hr, joules/sec, lumens, horsepower, megajoules/hr, and more Motors • Single- and three-phase motor calculations • Locked rotor current • Motor kVA (including multiple input scenarios) • Motor speed analysis Ohm’s Law • Calculate for power, voltage, resistance, or current Transformers • Primary and secondary amperage • Full-load transformer sizing (208V, 240V, 480V for single and three-phase) • Impedance and amperage capacity calculations Voltage Drop • Copper and aluminum wire voltage drop (1-phase and 3-phase) • US/Imperial and metric units supported Wiring & Conduits • Wire size and resistance (copper and aluminum) • Wire length calculations • Conduit sizing Whether you’re working in the field, the lab, or the classroom, this electrical formulator helps you work faster, smarter, and with confidence. Users are able to calculate twelve formulas for FREE. Purchase a subscription to calculate additional formulas. All subscriptions come with a 1-WEEK FREE TRIAL and SUPPORT Family Sharing.
Energy Cost Calculator
Easily calculate the energy consumption and operating costs of electrical devices. Track daily, monthly, and yearly usage, analyze costs, and estimate carbon emissions to optimize power usage and save money.
- Calculate energy consumption
- Analyze operating costs
- Estimate carbon emissions
- Track daily, monthly, yearly usage
- Calculate demand charges
- Optimize power usage
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Energy Cost Calculator – Track Usage, Demand Charges & Save Money Easily calculate the energy consumption and operating cost of your electrical devices, appliances, or industrial machines — now with Power Factor analysis and multi-device comparison. Just enter: • Power Consumption per Hour (kW) • Daily Usage Time (Hours) • Electricity Rate (Cost per kWh) Get instant results for: • Energy Consumption: Daily, Monthly, and Yearly • Cost Analysis: Daily, Monthly, and Yearly • Demand Charges: Peak Load (kW) with Power Factor (pf) correction — optional • Carbon Emissions: Estimate your environmental impact across Coal, Oil, Natural Gas, and Nuclear sources What's new in this version: Power Factor Analysis Enter your peak demand and power factor (pf) to calculate Apparent Power (kVA). Know whether your utility bills on kW or kVA, see the billing basis, and understand the true cost of low power factor — critical for commercial and industrial users. Multi-Device Comparison Add multiple appliances or machines and compare their monthly and yearly costs side by side. A live stacked bar chart shows which devices consume the most — so you know exactly where to cut. Share Your Results Export a full PDF report of your calculations — including demand charges, power factor analysis, and CO2 emissions — with a single tap. Ideal for: • Homeowners reducing electricity bills • Businesses and facility managers tracking equipment costs • Electrical engineers and energy auditors conducting power audits • Industrial users managing demand charges and power factor penalties • Anyone seeking to optimise power usage and reduce energy spend Whether you're planning an energy audit, sizing an electrical installation, or simply monitoring your household usage, this tool gives you actionable insights in seconds.
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Verdict
The clearest difference is review sentiment: Energy Cost Calculator at 62% against Electrical Formulator's 15%. Energy Cost Calculator also leads on in-app purchases (none vs 1) and ratings volume (66 vs 1). Electrical Formulator's advantage is rating (5.0 vs 4.4) and ads (none vs shown). On price, device support 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
Both are free to download. Electrical Formulator sells 1 one-off in-app purchase. Energy Cost Calculator asks for nothing beyond the download.
Electrical Formulator holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Energy Cost Calculator has 66 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 15% of Electrical Formulator's written reviews are positive against 62% of Energy Cost Calculator's, so the app with the better star average is not the one people write more warmly about.
Electrical Formulator ships an update every 2 months, Energy Cost Calculator every 8 months. The most recent releases landed on October 23, 2026 and October 28, 2026 respectively.
| Parameter | Electrical Formulator | Energy Cost Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.4 (66 ratings) |
| Positive reviews | 15.2% of reviews | 61.9% of reviews — better |
| Number of ratings | 1 | 66 — better |
| Update frequency | Every 2 months — better | Every 8 months |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | Ad-supported — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.4 | 17.6 — better |
| Further details — not scored | ||
| Size | 16 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | Historycentral.com | V PUGAZHENTHI |
Customer experience
Electrical Formulator
Energy Cost Calculator
In-app purchases
Electrical Formulator
- Pro Features For Electrcial$1.99
Energy Cost Calculator
No in-app purchases
Questions
Is Electrical Formulator free?
Is Energy Cost Calculator free?
Which has better reviews, Electrical Formulator or Energy Cost Calculator?
Do Electrical Formulator or Energy Cost Calculator have ads?
Which is updated more often, Electrical Formulator or Energy Cost Calculator?
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