Fault Current Finder vs SKM Mobile
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fault Current Finder
This tool models electrical distribution systems to calculate available fault current. It helps engineers and electricians ensure equipment is rated for maximum fault current, meeting NEC and IEC standards. Generate reports for compliance and safety.
- System modeling for fault current calculation
- Evaluate equipment ratings (fuses, breakers)
- Supports NEC and IEC standards
- One-line diagram approach
- Per unit methodology for accuracy
- Generate short circuit reports
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Fault Current Finder is a system modeling tool for short circuit calculations. It models an electrical distribution system to determine the available fault current (short circuit current) anywhere within the system. This useful tool helps Engineers, Electricians and Facility Managers evaluate if devices and equipment such as fuses, circuit breakers, panels, switchboards and switches are rated to meet the maximum available fault current. NEC 2017 440.4 requires dated short circuit calculations for every new HVAC install be made available to the inspector! IEC 60364 and DIN VDE 0100 require calculations for "Short Circuit Currents in Three Phase Systems". Short circuit current is also needed for arc flash calculations meeting NFPA 70E standard. Using a typical one line diagram approach, system information can be easily entered and fault current through an entire radial system can be easily evaluated. Methodology: The internationally recognized per unit (X & R Networks) methodology is used to calculate available fault current from Utility Transformers, Generators and Inverters. Additional resistance and reactance factors from conductors, buses and switches are calculated throughout the system. Per unit calculations provide superior model accuracy by independently calculating resistance and reactance throughout the electrical distribution system to develop X & R at each device. Meets ANSI C37.13 Low voltage equipment standard for 3 phase symmetrical fault current This app can can be used to help determine NEC (NFPA 70) and OSHA short circuit current ratings (SCCR), Ampere Interrupting Capacity (AIC) & Interrupting Rating (IR) for over current protection devices (OCPD) and associated equipment such as panels, switchboards, transfer switches, riser buses, disconnect switches, fuses and circuit breakers in systems 600V or less. To protect your facilities operational reliability, increase up time and increasing worker safety, ensure your equipment has adequate SSCR & AIC rating to meet short circuit current! Fault current finder is the easiest fault current tool! Short circuit reports are available (in-app purchase required)..
SKM Mobile
Capture field data, view study results, and manage equipment settings on your mobile device. Seamlessly import information to your desktop program and enhance your workflow with on-the-go access to essential project details.
- Field data collection
- View study results
- Import data to desktop
- Capture photos and videos
- Scan QR codes
- Scribble notes
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This SKM Mobile app requires a $299 USD/year subscription to use. Take SKM on the go! The SKM Mobile app provides an intuitive experience that lets you quickly and easily collect data from the field and seamlessly import it to your PTW desktop program! You can also view study results on your phone or tablet - such as what arc flash PPE to wear or to verify equipment settings! View onlines, take pictures, videos, scan QR codes, scribble notes, and more! Your subscription will be charged to your iTunes account at confirmation of purchase and will automatically renew (at the duration selected) unless auto-renew is turned off at least 24 hours before the end of the current period. The current subscription may not be canceled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your iTunes Account Settings after purchase. Terms of use: https://skm.com/terms-of-use.html Privacy policy: https://www.skm.com/privacy.html
Screenshots
Verdict
The clearest difference is rating: Fault Current Finder at 4.2 against SKM Mobile's 3.0. Fault Current Finder also leads on monetization model (free with in-app purchases vs subscription) and update cadence (every 5 weeks vs every 7 months). On price, ratings volume, 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
Both are free to download. Fault Current Finder sells 2 one-off in-app purchases and SKM Mobile sells 1 in-app purchase, starting at $299.99 per year. Whichever you choose, the download price is not the number that matters.
Fault Current Finder holds the better App Store score, 4.2 against 3.0. Both are backed by a comparable volume of ratings — 5 and 3 respectively.
Fault Current Finder ships an update every 5 weeks, SKM Mobile every 7 months. The most recent releases landed on October 8, 2026 and October 16, 2026 respectively.
| Parameter | Fault Current Finder | SKM Mobile |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (5 ratings) — better | 3.0 (3 ratings) |
| Positive reviews | 25.0% of reviews | — |
| Number of ratings | 5 — better | 3 |
| Update frequency | Every 5 weeks — better | Every 7 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases — better | Subscription |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 12.2 |
| Further details — not scored | ||
| Size | 23 MB | 132 MB |
| Age rating | 4+ | 4+ |
| Developer | Octagon Seven LLC | S.K.M. SYSTEMS ANALYSIS, INC. |
Customer experience
Fault Current Finder
SKM Mobile
In-app purchases
Fault Current Finder
- Report Generator$19.99
- System Upgrade$29.99
SKM Mobile
- SKM Mobile Subscription$299.991 Year
Questions
Is Fault Current Finder free?
Is SKM Mobile free?
Which has better reviews, Fault Current Finder or SKM Mobile?
Do Fault Current Finder or SKM Mobile have ads?
Which is updated more often, Fault Current Finder or SKM Mobile?
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