Comparison

Electrical Formulator vs ElectricalWiringPro

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

ElectricalWiringPro

This app provides electrical code and design calculations for professionals working with wiring systems. It includes tools for ampacity, wire sizing, box fill, and conduit fill, based on the 2011 National Electrical Code.

Highlights
  • Ampacity and wire sizing calculations
  • Dwelling service size calculations
  • Box fill calculations
  • Conduit fill calculations
  • Color code references for phone and Ethernet
  • Receptacle configuration information
Features
Read full description

Electrical code & design calculators for electricians, engineers working with wiring systems and other electrical professionals. Written by a working Electrician using it on a daily basis. Calculations per 2011 National Electrical Code. o Ampacity / Wire Size - Wire Size -> Ampacity - Ampacity Needed -> Wire Size - Dwelling Service Size - GEC Size - EGC Size o Box Fill - Box Size from Wires / Devices - Box Size from Cables / Devices - Standard Box and Typical Plaster Ring Info o Conduit Fill - Conduit - Maximum # of Wires - Conduit Size Needed - Conduit % Full - Conduit Size Information - Wire Size Information o Other - Cover Depth - Phone Pin Color Codes - Ethernet (EIA/TIA568 a & B) Color Codes - Receptacle Configurations More features delivered as free upgrades. We hope you find the app useful.

Screenshots

Electrical Formulator4 screens
ElectricalWiringPro4 screens

Verdict

The call

The clearest difference is rating: Electrical Formulator at 5.0 against ElectricalWiringPro's 3.4. ElectricalWiringPro's advantage is in-app purchases (none vs 1) and review sentiment (40% vs 15%). On price, update cadence, ads 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

Both are free to download. Electrical Formulator sells 1 one-off in-app purchase. ElectricalWiringPro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Electrical Formulator holds the better App Store score, 5.0 against 3.4. That said, the two scores are not equally well evidenced: ElectricalWiringPro has 8 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 40% of ElectricalWiringPro's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Electrical Formulator ships an update every 2 months, ElectricalWiringPro every 5 weeks. The most recent releases landed on October 6, 2026 and October 5, 2026 respectively.

Scorecard6 real differences · 4 level
Electrical Formulator versus ElectricalWiringPro: the parameters behind the verdict, then further details
ParameterElectrical FormulatorElectricalWiringPro
PriceFreeFree
Rating5.0 (1 ratings) — better3.4 (8 ratings)
Positive reviews15.2% of reviews40.0% of reviews — better
Number of ratings18 — better
Update frequencyEvery 2 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.49.0 — better
Further details — not scored
Size16 MB16 MB
Age rating4+4+
DeveloperHistorycentral.comIntineo LLC

Customer experience

Electrical Formulator

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews33 reviews
Positive15.2%
Neutral9.1%
Negative75.8%

ElectricalWiringPro

All ratings8 ratings
Positive62.5%
Neutral12.5%
Negative25.0%
Written reviews15 reviews
Positive40.0%
Neutral20.0%
Negative40.0%

In-app purchases

1 purchases

Electrical Formulator

One-time1
  • Pro Features For Electrcial$1.99
None

ElectricalWiringPro

No in-app purchases

Questions

Is Electrical Formulator free?
Electrical Formulator is free to download, with in-app purchases available.
Is ElectricalWiringPro free?
ElectricalWiringPro is free to download, with no in-app purchases.
Which has better reviews, Electrical Formulator or ElectricalWiringPro?
Electrical Formulator is rated higher. Electrical Formulator averages 5.0 out of 5 from 1 ratings, while ElectricalWiringPro averages 3.4 from 8 ratings.
Do Electrical Formulator or ElectricalWiringPro have ads?
Neither Electrical Formulator nor ElectricalWiringPro shows ads.
Which is updated more often, Electrical Formulator or ElectricalWiringPro?
Electrical Formulator ships an update every 2 months, and ElectricalWiringPro every 5 weeks. Most recently, Electrical Formulator was updated on October 6, 2026 and ElectricalWiringPro on October 5, 2026.

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