Comparison

Fault Current Calculator vs SCR MAXFLO™

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

SCR MAXFLO™

This app calculates pressure drop, fluid velocity, Reynold's number, and friction factor for liquids and gases. It allows users to create custom projects, manage pipes, fluids, and fittings, and supports both metric and imperial units for efficient on-site work.

Highlights
  • Pressure drop calculation
  • Fluid velocity calculation
  • Reynold's number calculation
  • Friction factor calculation
  • Custom project creation
  • Pipe, fluid, and fitting management
  • Metric and imperial unit support
Features
Read full description

The SCR MAXFLO™ App calculates pressure drop, fluid velocity, Reynold’s number, and friction factor for both liquid and gas. Other features include the ability to create custom projects as well as the ability to add and edit pipes, fluids, and fittings. Need to work in metric and imperial units? The SCR MAXFLO™ App has you covered. From changing pipe size on the fly to sharing your calculations with other users, the SCR MAXFLO™ App can help you work quickly and efficiently on any job site.

Screenshots

Fault Current Calculator4 screens
SCR MAXFLO™4 screens

Verdict

The call

The clearest difference is rating: SCR MAXFLO™ at 4.6 against Fault Current Calculator's 3.1. SCR MAXFLO™ also leads on in-app purchases (none vs 2). Fault Current Calculator's advantage is update cadence (every 4 months vs every 11 months) and ratings volume (23 vs 5). On price and ads 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. Fault Current Calculator sells 2 in-app purchases, starting at $4.99 per month. SCR MAXFLO™ asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

SCR MAXFLO™ holds the better App Store score, 4.6 against 3.1. Both are backed by a comparable volume of ratings — 23 and 5 respectively.

UpkeepUpdate frequency

Fault Current Calculator ships an update every 4 months, SCR MAXFLO™ every 11 months. The most recent releases landed on October 2, 2026 and September 28, 2026 respectively.

Scorecard7 real differences · 3 level
Fault Current Calculator versus SCR MAXFLO™: the parameters behind the verdict, then further details
ParameterFault Current CalculatorSCR MAXFLO™
PriceFreeFree
Rating3.1 (23 ratings)4.6 (5 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings23 — better5
Update frequencyEvery 4 months — betterEvery 11 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS14.0 — better16.6
Further details — not scored
Size25 MB7 MB
Age rating17+4+
DeveloperCooper Bussmann, LLCSouthwire Company

Customer experience

Fault Current Calculator

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

SCR MAXFLO™

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

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

SCR MAXFLO™

No in-app purchases

Questions

Is Fault Current Calculator free?
Fault Current Calculator is free to download, with in-app purchases available.
Is SCR MAXFLO™ free?
SCR MAXFLO™ is free to download, with no in-app purchases.
Which has better reviews, Fault Current Calculator or SCR MAXFLO™?
SCR MAXFLO™ is rated higher. Fault Current Calculator averages 3.1 out of 5 from 23 ratings, while SCR MAXFLO™ averages 4.6 from 5 ratings.
Do Fault Current Calculator or SCR MAXFLO™ have ads?
Neither Fault Current Calculator nor SCR MAXFLO™ shows ads.
Which is updated more often, Fault Current Calculator or SCR MAXFLO™?
Fault Current Calculator ships an update every 4 months, and SCR MAXFLO™ every 11 months. Most recently, Fault Current Calculator was updated on October 2, 2026 and SCR MAXFLO™ on September 28, 2026.

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