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.
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.
- 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
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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.
Electrical Certificate App
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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
Verdict
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
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.
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.
| Parameter | Fault Current Calculator (PFC) | Electrical Certificate App |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (2 ratings) — better | — |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 14 months | Every 2 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 10 MB | 47 MB |
| Age rating | 4+ | 4+ |
| Developer | Pro Certs Software Ltd | Trade Apps LTD |
In-app purchases
Fault Current Calculator (PFC)
No in-app purchases
Electrical Certificate App
- Monthly Subscription$19.991 Month
- yearly Subscription$199.991 Year





