Comparison

Fault Current Calculator vs Workman's Calculator Pro

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

Head to head
About

Fault Current Calculator

This tool helps contractors, engineers, and electricians quickly calculate available fault current on single and three-phase electrical systems. It also assists in sizing fuses and conductors for various circuits and can generate labels for service equipment.

Highlights
  • Calculate available fault current
  • Size fuses and conductors
  • Generate service equipment labels
  • Single and three-phase system support
  • NEC® 110.24 compliance
Features
Read full description

Eaton's Bussmann Series FC2 Available Fault Current Calculator application is an innovative tool developed for contractors, engineers, electricians, and electrical inspectors. This tool can be used on the Bussmann website or out in the field on a mobile device for those needing a quick and simple way to determine available fault current. With this simple tool, users can: - Calculate available fault current on single and three-phase systems - Create and send a label via email for marking the available fault current on service equipment (NEC® 110.24) - Size fuses and conductors for service, feeder, and branch circuits. This application, calculations, and other information are intended to clearly present technical information that will determine the available fault current at specific points in an electrical system. Bussmann reserves the right, without notice, to change this application and/or discontinue/ limit its distribution and/or availability. Bussmann also reserves the right to change or update, without notice, any technical information contained in this application. The data and information presented in this application are believed to be accurate. However, any and all liability for the content, or any omissions from this application, including any inaccuracies, errors, or misstatements in such data, calculations or information, is expressly disclaimed. The application, calculations and other information are provided without warranty of any kind, either expressed or implied, but not limited to, the implied warranties of merchantability, or fitness for a particular purpose. Bussmann disclaims any liability for the use of this application, calculations or other information. The complete End-User License Agreement can be found at: https://faultcurrentcalculatorpro.bussmann.com/home/eula

About

Workman's Calculator Pro

This construction calculator simplifies complex measurements for tradespeople. It allows simultaneous calculations in feet, inches, yards, and meters, with an intuitive interface for fractions and decimals. Get accurate results quickly to save time on the job.

Highlights
  • Simultaneous multi-unit calculations (feet, inches, yards, meters)
  • Intuitive fraction input with dynamic button display
  • Handles decimal multiplication
  • Multiple display options (feet, inches, decimals)
  • Designed for speed and accuracy in construction
Features
Currently charting
Read full description

The calculator has been rebuilt, and it's built for the trades! Workman's Construction Calculator is the best, and simplest construction calculator available on the App Market. With the most intuitive way to calculate measurements. Work with Feet, inches, yards, meters, and regular numbers. Simultaneously! Never before has a calculator worked like this! Do you want to put in 3/16 of an inch? Press the numerator button, click 3, and click 16 afterward, done. Yes, 16. One of the unique parts of Workman's Calculator is that the buttons change. When selecting a numerator only odd values are shown (1, 3, 5, 7, 9). After clicking one of the values the appropriate denominator values appear. If the numerator is 9 or higher, automatically 16 is selected. The denominators will always be more than the numerator. Need to multiply by a decimal? Go ahead. Choose how you wish to view your calculations. • Feet • Inches • Decimals Workman's Calculator is about being quick and getting you your calculations that you need, so there's more time getting done what needs to be done and less time on the phone.

Screenshots

Fault Current Calculator4 screens
Workman's Calculator Pro4 screens

Verdict

The call

The clearest difference is review sentiment: Workman's Calculator Pro at 67% against Fault Current Calculator's 0%. Workman's Calculator Pro also leads on rating (4.1 vs 3.0) and in-app purchases (none vs 2). Fault Current Calculator's advantage is price (Free vs $1.99). On ratings volume, ads, 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

CostPrice · In-app purchases · Ads · Monetization

Fault Current Calculator is free to download; Workman's Calculator Pro costs $1.99 up front. Fault Current Calculator sells 2 in-app purchases, starting at $4.99 per month. Workman's Calculator Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Workman's Calculator Pro holds the better App Store score, 4.1 against 3.0. Both are backed by a comparable volume of ratings — 27 and 51 respectively. Written reviews point the same way: 0% of Fault Current Calculator's written reviews are positive against 67% of Workman's Calculator Pro's.

UpkeepUpdate frequency

Fault Current Calculator ships an update every 4 months, Workman's Calculator Pro fortnightly. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

Scorecard7 real differences · 4 level
Fault Current Calculator versus Workman's Calculator Pro: the parameters behind the verdict, then further details
ParameterFault Current CalculatorWorkman's Calculator Pro
PriceFree — better$1.99
Rating3.0 (27 ratings)4.1 (51 ratings) — better
Positive reviews0.0% of reviews66.7% of reviews — better
Number of ratings2751 — better
Update frequencyEvery 4 monthsFortnightly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium — betterPaid
Best chart rank—#167 — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS14.013.0 — better
Further details — not scored
Size25 MB12 MB
Age rating17+4+
DeveloperCooper Bussmann, LLCBret Hardman

Customer experience

Fault Current Calculator

All ratings23 ratings
Positive47.8%
Neutral8.7%
Negative43.5%
Written reviews10 reviews
Positive0.0%
Neutral20.0%
Negative80.0%

Workman's Calculator Pro

All ratings51 ratings
Positive78.4%
Neutral2.0%
Negative19.6%
Written reviews27 reviews
Positive66.7%
Neutral7.4%
Negative25.9%

In-app purchases

2 purchases

Fault Current Calculator

Subscriptions2
  • Pro Monthly Subscription7 Days trial$4.991 Month
  • Pro Annual Subscription7 Days trial$39.991 Year
None

Workman's Calculator Pro

No in-app purchases

Questions

Is Fault Current Calculator free?
Fault Current Calculator is free to download, with in-app purchases available.
Is Workman's Calculator Pro free?
Workman's Calculator Pro costs $1.99, with no in-app purchases.
Which has better reviews, Fault Current Calculator or Workman's Calculator Pro?
Workman's Calculator Pro is rated higher. Fault Current Calculator averages 3.0 out of 5 from 27 ratings, while Workman's Calculator Pro averages 4.1 from 51 ratings.
Do Fault Current Calculator or Workman's Calculator Pro have ads?
Neither Fault Current Calculator nor Workman's Calculator Pro shows ads.
Which is updated more often, Fault Current Calculator or Workman's Calculator Pro?
Fault Current Calculator ships an update every 4 months, and Workman's Calculator Pro fortnightly. Most recently, Fault Current Calculator was updated on October 23, 2026 and Workman's Calculator Pro on October 24, 2026.

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