Comparison

ElectriCalc Pro vs Breaker Box

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

Head to head
About

ElectriCalc Pro

This app provides electricians and electrical professionals with a powerful tool for performing complex calculations based on the latest National Electrical Code (NEC). It offers solutions for wire sizing, voltage drop, conduit sizing, and motor calculations, saving time and ensuring code compliance.

Highlights
  • NEC compliant calculations
  • Wire and conduit sizing
  • Voltage drop calculations
  • Motor full-load amps
  • Ohm's Law solver
  • Built-in help and tutorials
Features
Read full description

FREE Try Before You Buy trial, your App Store account is not charged by Apple during the free trial. Electrical Contractors, Designers, Electricians, and Lighting Specialists solve tough electrical calculations in seconds and deliver those solutions in conformance with the latest NEC®. The ElectriCalc Pro electrical code calculator is compliant with 2023, 2020, 2017, 2014, 2011, 2008, 2005, 2002, 1999, and 1996 NEC®. The official US-based National Electrical Code® (NEC) ElectriCalc Pro from Calculated Industries for iOS is a full-featured emulation of our popular #5065/#5070 models. ----- Full Functionality of our Pro Handheld Calculator ----- • Experience the power of a professional calculator on your iPhone. • ElectriCalc Pro replicates all features & solutions of our top-rated handheld model. ----- Built-in Help & Tutorials ----- • Press and hold any key for clear definitions, examples, and usage guides. • A complete user manual is also available. ----- Complete Electrical Reference Tool ----- • Save time, trouble, and money with ElectriCalc Pro's comprehensive electrical reference data. • All the info you need for calculations and code compliance is built into one app. The ElectriCalc Pro is a complete electrical reference tool that will save time, trouble, and money. ElectriCalc Pro Solutions: • Wire Sizes • Voltage Drop • Conduit Sizing • Motor Full-Load Amps • Fuse and Breaker Sizes • Service and Equipment Grounding Conductor Sizes • Parallel Resistance • Ohm’s Law Calculations – enter any two values to solve for the third • Circular MILS wire sizes ElectriCalc Pro Calculations: • Work directly in and convert between Amps, Watts, Volts, Volt-Amps, kVA, kW, PF% and EFF%, and DC Resistance • Calculate wire sizes per NEC® 310-16 and 310-17; Copper or aluminum, 3Ø/1Ø, 60°C, 75°C, 90°C insulation ratings and 100% or 125% of ampacity. Can also adjust wire sizes for ambient temperatures other than 30◦ C and more than three wires in a raceway • Integrated voltage drop solutions. Find minimum VD wire size, maximum length for any given wire size, drop percentage, actual number and percentage of Volts dropped • Conduit sizing for 12 types of conduit. Plus, it gives fill percentages, cross-sectional areas, remaining areas, and more • Find Motor Full-Load Amps per current NEC®. Works in 1Ø and 3Ø with the newly expanded tables for 3Ø induction (to 500 hp), synchronous (to 200 hp), and DC motors per NEC® 430-247, 430- 248 and 430-250 • Calculates Fuse and Breaker Sizes per NEC® 430-52 • Parallel and derated wire sizing • Parallel Resistance • NEC Table number displays when performing Wire Size calculations • Sizes overload protection per NEC® 430-32 • Automatically finds NEMA starter sizes • Calculates service and equipment grounding conductor sizes per NEC®: 250-122 and 250-66. • Enter BTU to find Kilowatts per Hour • Enter Kilowatts per Hour to find BTU • Ohm’s Law Calculations – enter any two values to solve for the third • Enter, solve, or convert to Circular MILS wire sizes Note: Electrical math is universal. However, code-based sizing solutions are based on the US National Electrical Code® (NEC); users in other countries should check with their local Code Officials for applicability. SUBSCRIPTION INFORMATION The first seven days are free. Subscriptions offered will automatically renew at the end of the chosen period. Upon purchase confirmation and completion of a free trial, payment will be charged to your Apple account. The subscription will automatically renew unless auto-renew is turned off or the subscription is canceled in settings at least one day (24 hours) before the subscription period ends. You can manage your subscription and turn off auto-renewal in your Apple account Settings > Account (Apple ID) > Subscriptions. TRADEMARKS ElectriCalc(TM) and Calculated Industries® are trademarks and registered trademarks of Calculated Industries, Inc. Copyright 2024

About

Breaker Box

Easily label and document every circuit in your electrical panel. Assign notes, rooms, and fixtures to breakers, and generate printable PDF legends for quick identification. Supports multi-panel management and cloud sync for data safety.

Highlights
  • Label circuits with notes, rooms, and fixtures
  • Supports tandem splits, multi-pole, GFCI, and HACR
  • Organize circuits by room and linked fixtures
  • Generate printable PDF legends for panels
  • Manage multiple panels and properties
  • Cloud sync and automatic backups
Features
Read full description

Stop guessing which breaker controls what. Whether you're a homeowner mapping a single panel or an electrician documenting multiple buildings, Breaker Box gives you a complete directory for every circuit — and lets you print a professional legend to match. LABEL EVERY CIRCUIT Assign notes, rooms, and fixtures to each breaker. Tandem splits, multi-pole circuits, GFCI outlets, and HACR systems all supported. Track wire gauge and size. Use custom phase colors for 1-, 2-, and 3-phase panels. ORGANIZE BY ROOM Link circuits to the rooms and fixtures they control — so you always know which breaker to flip, in seconds. PDF LEGENDS Export to PDF, sized to fit a panel sleeve or tape to the door. Adjust font scale per label for a professional result. MULTI-PANEL SUPPORT Manage multiple panels across one or more properties. Link breakers to sub-panels. PRO FEATURES • Unlimited panels • PDF export with custom print sizes • Cloud sync across all your devices • Custom fixture types and unlimited rooms • Import and export for client handoffs and device transfers BACKUP & RESTORE Automatic backups and cloud management keep your data safe. Every circuit, documented.

Screenshots

ElectriCalc Pro4 screens
Breaker Box4 screens

Verdict

The call

The clearest difference is rating: ElectriCalc Pro at 4.9 against Breaker Box's 4.5. ElectriCalc Pro also leads on ratings volume (369 vs 109) and iOS requirement (14.0 vs 16.0). Breaker Box's advantage is update cadence (every 9 days vs every 10 months). On price, review sentiment, ads and in-app purchases 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. ElectriCalc Pro sells 2 in-app purchases, starting at $4.99 per month and Breaker Box sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

ElectriCalc Pro holds the better App Store score, 4.9 against 4.5. Both are backed by a comparable volume of ratings — 369 and 109 respectively. Written reviews split almost evenly too, at 78% and 78% positive.

UpkeepUpdate frequency

ElectriCalc Pro ships an update every 10 months, Breaker Box every 9 days. The most recent releases landed on November 12, 2026 and November 13, 2026 respectively.

Scorecard4 real differences · 6 level
ElectriCalc Pro versus Breaker Box: the parameters behind the verdict, then further details
ParameterElectriCalc ProBreaker Box
PriceFreeFree
Rating4.9 (369 ratings) — better4.5 (109 ratings)
Positive reviews78.1% of reviews — better77.8% of reviews
Number of ratings369 — better109
Update frequencyEvery 10 monthsEvery 9 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.0 — better16.0
Further details — not scored
Size29 MB62 MB
Age rating12+4+
DeveloperCalculated IndustriesBrett Pappas

Customer experience

ElectriCalc Pro

All ratings354 ratings
Positive98.9%
Neutral0.3%
Negative0.8%
Written reviews32 reviews
Positive78.1%
Neutral6.3%
Negative15.6%

Breaker Box

All ratings109 ratings
Positive83.5%
Neutral11.0%
Negative5.5%
Written reviews63 reviews
Positive77.8%
Neutral17.5%
Negative4.8%

Bugs and requests

ElectriCalc Pro

Reported bugs

5 issues
  • No active subscriptions error after iOS update
  • HP calculations not working
  • App closes when calculating conduit size
  • Wire size calculation crashes the app
  • Fails when entering HP

Requested features

2 requests
  • Option to print
  • Metric wire size (mm2)

Breaker Box

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

ElectriCalc Pro

Subscriptions2
  • 1 Month Full Access7 Days trial$4.991 Month
  • 1 Year Full Access7 Days trial$39.991 Year
1 purchases

Breaker Box

One-time1
  • Lifetime Pro License$9.99

Questions

Is ElectriCalc Pro free?
ElectriCalc Pro is free to download, with in-app purchases available.
Is Breaker Box free?
Breaker Box is free to download, with in-app purchases available.
Which has better reviews, ElectriCalc Pro or Breaker Box?
ElectriCalc Pro is rated higher. ElectriCalc Pro averages 4.9 out of 5 from 369 ratings, while Breaker Box averages 4.5 from 109 ratings.
Do ElectriCalc Pro or Breaker Box have ads?
Neither ElectriCalc Pro nor Breaker Box shows ads.
Which is updated more often, ElectriCalc Pro or Breaker Box?
ElectriCalc Pro ships an update every 10 months, and Breaker Box every 9 days. Most recently, ElectriCalc Pro was updated on November 12, 2026 and Breaker Box on November 13, 2026.

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