Comparison

Fault Current Calculator (PFC) vs Electrical Certificate App

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

Electrical Certificate App

Features
Read full description

Electrical Certificate App is the essential software for all Electrical Engineers. ELECTRICAL CERTIFICATES INCLUDED: - Minor Works - Three Circuit Minor Works - Domestic Electrical Installation Certificate - Electrical Installation Condition Report - Electrical Installation Certificate - Electrical Danger Notice - Visual Inspection - Earthing & Bonding Certificate - Electrical Isolation Certificate FEATURES - Create Invoices and Estimates - Manage your customers from our easy to use CRM system - Auto save option - Automatically syncs with our desktop application - View completed certificates whenever you need them - View all paid / unpaid invoices - Add your own logo, company name and more to give your certificates your own personal touch. - The system is encrypted with 248bit bank level encryption, so your data is safe and sound. Subscription 1 Month Subscription | Unlimited Access to Certificates | Unlimited Certificates | Free Storage of Certificates | £14.99 Per month By using this app, you agree to Apple’s Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ For our Privacy Policy, visit: https://help.tradeapps.co.uk/en/article/privacy-policy-1rwkmw5

Screenshots

Fault Current Calculator (PFC)4 screens
Electrical Certificate App4 screens

Verdict

The call

The clearest difference is in-app purchases: Fault Current Calculator (PFC) at none against Electrical Certificate App's 2. Electrical Certificate App's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 14 months). On price, 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

Both are free to download. Electrical Certificate App sells 2 in-app purchases, starting at $19.99 per month. Fault Current Calculator (PFC) asks for nothing beyond the download.

UpkeepUpdate frequency

Fault Current Calculator (PFC) ships an update every 14 months, Electrical Certificate App every 2 weeks. The most recent releases landed on August 14, 2026 and September 8, 2026 respectively.

Scorecard3 real differences · 7 level
Fault Current Calculator (PFC) versus Electrical Certificate App: the parameters behind the verdict, then further details
ParameterFault Current Calculator (PFC)Electrical Certificate App
PriceFreeFree
Rating1.0 (2 ratings) — better—
Positive reviews33.3% of reviews—
Number of ratings2 — better—
Update frequencyEvery 14 monthsEvery 2 weeks — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.6
Further details — not scored
Size10 MB47 MB
Age rating4+4+
DeveloperPro Certs Software LtdTrade Apps LTD

In-app purchases

None

Fault Current Calculator (PFC)

No in-app purchases

2 purchases

Electrical Certificate App

Subscriptions2
  • Monthly Subscription$19.991 Month
  • yearly Subscription$199.991 Year

Questions

Is Fault Current Calculator (PFC) free?
Fault Current Calculator (PFC) is free to download, with no in-app purchases.
Is Electrical Certificate App free?
Electrical Certificate App is free to download, with in-app purchases available.
Do Fault Current Calculator (PFC) or Electrical Certificate App have ads?
Fault Current Calculator (PFC) shows ads; Electrical Certificate App does not.
Which is updated more often, Fault Current Calculator (PFC) or Electrical Certificate App?
Fault Current Calculator (PFC) ships an update every 14 months, and Electrical Certificate App every 2 weeks. Most recently, Fault Current Calculator (PFC) was updated on August 14, 2026 and Electrical Certificate App on September 8, 2026.

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