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.
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.
- Calculate available fault current
- Size fuses and conductors
- Generate service equipment labels
- Single and three-phase system support
- NEC® 110.24 compliance
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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
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.
- 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
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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
Verdict
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
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.
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.
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.
| Parameter | Fault Current Calculator | Workman's Calculator Pro |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 3.0 (27 ratings) | 4.1 (51 ratings) — better |
| Positive reviews | 0.0% of reviews | 66.7% of reviews — better |
| Number of ratings | 27 | 51 — better |
| Update frequency | Every 4 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium — better | Paid |
| Best chart rank | — | #167 — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 14.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 25 MB | 12 MB |
| Age rating | 17+ | 4+ |
| Developer | Cooper Bussmann, LLC | Bret Hardman |
Customer experience
Fault Current Calculator
Workman's Calculator Pro
In-app purchases
Fault Current Calculator
- Pro Monthly Subscription7 Days trial$4.991 Month
- Pro Annual Subscription7 Days trial$39.991 Year
Workman's Calculator Pro
No in-app purchases
Questions
Is Fault Current Calculator free?
Is Workman's Calculator Pro free?
Which has better reviews, Fault Current Calculator or Workman's Calculator Pro?
Do Fault Current Calculator or Workman's Calculator Pro have ads?
Which is updated more often, Fault Current Calculator or Workman's Calculator Pro?
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