Comparison

Fault Current Calculator (PFC) vs Megger Link

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 (PFC)

This app calculates prospective fault current (PFC) in kA and Amps for single and three-phase circuits. It allows users to input any two values (voltage, earth loop impedance, or PFC) to determine the third, aiding in selecting appropriate circuit breaker ratings.

Highlights
  • Calculate PFC from Zs/Ze and Voltage
  • Calculate Zs/Ze from Voltage and PFC
  • Calculate Voltage from PFC and Zs/Ze
  • PFC calculation in kA and Amps
  • Single and three-phase support
  • Input any two values to calculate the third
Features
Read full description

Fault Current Calculator for iPhone and iPad is a fast, free tool for electricians, contractors, and engineers. Calculate Prospective Fault Current (PFC), Prospective Short-Circuit Current (PSCC), and Prospective Earth Fault Current (PEFC). Enter any two known values - voltage, loop impedance (Zs/Ze), or fault current - and the app instantly calculates the third. KEY FEATURES: PSCC and PEFC calculations: Calculate prospective short-circuit current for L-N or L-L faults and prospective earth fault current for L-E faults. Single-phase and three-phase support: Perform fault-current calculations for both system types. Automatic calculations: Enter any two known values to auto calculate the third. Loop-impedance calculator: Calculate Zs or Ze from voltage and prospective fault current. Formula display: See the formula used for each calculation so you can understand and verify the result. Works offline: Use the app in roof spaces, basements, plant rooms, and other locations without a signal. Dark mode and light mode: Maintain a clear display in different site conditions. 16 languages: Fully translated for electricians worldwide (af, ar, de, es, en, fr, hi, id, it, ja, ko, nl, pl, pt, ru, zh). Fast and free: A clean interface designed to deliver results without unnecessary steps. DEFINITIONS: AIC (Ampere Interrupting Capacity), often written as kAIC for kilo-Amperes, is a specific rating for protective devices that open a circuit, such as circuit breakers and fuses. SCCR (Short-Circuit Current Rating) is the maximum fault current that a complete piece of equipment or electrical assembly (like an industrial control panel, switchboard, or HVAC unit) can safely withstand without causing a hazard. Electrical calculations should be independently verified before safety-critical work. Ensure the calculated prospective fault current does not exceed the protective device's rated breaking capacity. For additional tools, upgrade to Electrical Tools & Reference, which includes calculators for kVA, Max Zs, cable sizing, and more. Pro Certs Software - trusted by electricians since 2011.

About

Megger Link

View instrument readings digitally and graphically on your smartphone or tablet. Start data logging or download saved files directly from the instrument. Export data in CSV format for easy off-site analysis and reporting.

Highlights
  • Remote live reading display
  • Graphical trend viewing
  • Data file download
  • CSV data export
  • Initiate data logging
Features
Read full description

Megger Link is designed to allow the user to remotely view a linked instruments displayed values in a digital and graphical format, start a data logging process or download saved files. Screenshots and data files can then be sent via e-mail or messenger for analysis and reporting purposes. Features: . Show live reading remotely on your smart phone or tablet. . View trends in the reading via the live graph. . Download data files stored on the instrument. . Export the data in a .CSV format file, that can be read by Microsoft Excel or other programs, for easy off-site analysis of the data. . Initiate data logging of the measured values - saved direct in the App.

Screenshots

Fault Current Calculator (PFC)4 screens
Megger Link4 screens

Verdict

The call

The clearest difference is monetization model: Megger Link at free against Fault Current Calculator (PFC)'s paid. Megger Link also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.0). Fault Current Calculator (PFC)'s advantage is review sentiment (33% vs 20%). On price, update cadence, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Fault Current Calculator (PFC) ships an update every 14 months, Megger Link every 15 months. The most recent releases landed on October 14, 2026 and October 5, 2026 respectively.

Scorecard4 real differences · 6 level
Fault Current Calculator (PFC) versus Megger Link: the parameters behind the verdict, then further details
ParameterFault Current Calculator (PFC)Megger Link
PriceFreeFree
Rating1.0 (2 ratings) — better—
Positive reviews33.3% of reviews — better20.0% of reviews
Number of ratings2 — better—
Update frequencyEvery 14 months — betterEvery 15 months
AdsYesNo — better
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size10 MB9 MB
Age rating4+4+
DeveloperPro Certs Software LtdMegger

Customer experience

Fault Current Calculator (PFC)

All ratings2 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews3 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

Megger Link

Written reviews5 reviews
Positive20.0%
Neutral20.0%
Negative60.0%

In-app purchases

None

Fault Current Calculator (PFC)

No in-app purchases

None

Megger Link

No in-app purchases

Questions

Is Fault Current Calculator (PFC) free?
Fault Current Calculator (PFC) is free to download, with no in-app purchases.
Is Megger Link free?
Megger Link is free to download, with no in-app purchases.
Do Fault Current Calculator (PFC) or Megger Link have ads?
Fault Current Calculator (PFC) shows ads; Megger Link does not.
Which is updated more often, Fault Current Calculator (PFC) or Megger Link?
Fault Current Calculator (PFC) ships an update every 14 months, and Megger Link every 15 months. Most recently, Fault Current Calculator (PFC) was updated on October 14, 2026 and Megger Link on October 5, 2026.

Other comparisons