Electrical Calc Pro vs Kopperfield
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Electrical Calc Pro
This professional electrical application calculates common electrical problems, including wire sizing, conduit sizing, and fusing based on the Canadian Electric Code. It offers advanced features for motor loads, transformers, feeders, and voltage drop calculations, making it an essential tool for electricians and engineers.
- Wire and conduit sizing
- Motor and transformer load calculations
- Voltage drop calculations
- Panel legend creation and export
- Allowable ampacity and derating
- Box fill calculations
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E-Calc Pro is a professional electrical application for calculating many common electrical problems. This app is an essential tool for all electricians and electrical engineers. Unlike other similar apps E-Calc not only calculates simple formulas but returns code results including wire sizing, conduit sizing, fusing, overload size, ground and bond size and much more based on the Canadian Electric Code. The features of this app are too long to list but here are a few of the key ones; - Basic construction calculator allows you to easily divide rooms for lighting in imperial or metric measurements. - Calculate any single motor or multiple motor load and get maximum overcurrent, maximum overload, minimum wire, minimum pipe, and minimum bond wire size. Store a schedule of motors for easy retrieval. - Calculate any transformer size and get KVA, FLA, pipe size, fuse and breaker size, bond size and ground size, on both primary and secondary. Easily choke down the transformer and get appropriate results for the modified demand load. - Calculate feeders for wire size, conduit size and voltage drop simultaneously. - Create panel legends of any size and easily export or print them right from your device. - Calculate the allowable ampacity of any wire type and deration situation. - Calculate maximum number of similar sized wires in a given pipe size. - Calculate pipe size required for a list of any number, size, and type of wire. - Calculate required ground and bonding sizes. - Easily calculate complicated voltage drop calculations. Get results for percentage voltage drop as well as maximum lengths of runs and wire size. Derating is also supported. - Calculate minimum burial depths for any situation including special situations including mechanical protection, under slab, and rock encased. - Calculate any box fill situation in mL and cubic inch. - Calculate recommeneded torque settings for all varieties of lugs and terminations. - Convert many common units. - Find NEMA codes and specs of receptacles. - Calculate residential single dwelling service sizes. - Easily access in app support with quick links to your tablet's email.
Kopperfield
Streamline electrical design and permitting with powerful tools for load calculations, panel schedules, and single-line diagrams. Quickly reference the National Electrical Code with an AI-powered chatbot and generate instant PDF reports for inspectors and clients.
- Load calculator with NEC standards
- Single line diagram tool
- Panel schedule creation
- NEC chatbot
- Instant PDF report generation
- AI panel photo processing
- Team dashboard
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Save time and money. Get ready for permits and projects with faster and easier design tools from Kopperfield, including load calcs, line diagrams, panel schedules, and more. Once logged into your Kopperfield account, you'll enjoy our: * Load calculator: Easy-to-use interface pre-loaded with common appliances and their standard output values from the National Electrical Code. Add information on the property and your calculation will automatically update. Supports both commercial and residential calculations, as well as the Standard (NEC Article 220 Part III), Optional (NEC Article 220 Part IV), and 2026 Standard (NEC Article 120 Part III) methods. * Single line diagram tool: Contains dozens of common templates and electrical symbols to make it easy to generate new diagrams and share them with your team. View diagrams from any device and create new templates on tablet or desktop for your whole team to use. * Panel schedules: Includes tools to complete panel schedules and create labels for electrical panels. Drag-and-drop interface makes it easy to arrange and customize circuits for both split-phase and three-phase projects. * NEC chatbot: Custom chatbot with advanced search capabilities to quickly reference specific sections of the 2017, 2020, or 2023 National Electrical Code. Includes the following features: * Fast PDF outputs: instantly generate a downloadable, one-page PDF report of your load calc, line diagram, or panel schedule to share with inspectors and customers * Smart property data: enter the property address and we’ll pull in the square footage for any customer project or electrical load calculation * AI panel photo processing: upload a photo of an electrical panel to automatically add items to your load calculation or panel schedule * Team dashboard: store your team's projects and documents in one place for easier management, access, and review *Single and three phase options: use a variety of nominal voltages for residential and commercial building types, including: 120/240V, 120/208V, 120/240V, 208Y/120V 3Ø, 240V 3Ø Delta, 240V 3Ø Hi-leg Delta, 347V 3Ø Delta, 480Y/277V 3Ø, 480V 3Ø Delta, 600Y/347Y 3Ø, 600V 3Ø Delta. * Standard scenarios: generate load calcs for scenarios including single family homes (standard and optional methods), multi dwelling units (i.e., duplex, triplex, quad), 120/208v (three-phase power) dwellings, accessory dwelling units and additions, commercial occupancy types, and heat pumps * Common appliance defaults: choose from a pre-loaded list of common appliances and standard output values that you can adjust for every load calculation * EV charger inputs: include EV charger values to any load calculation, essential for modern homes
Screenshots
Verdict
The clearest difference is review sentiment: Electrical Calc Pro at 60% against Kopperfield's 0%. Electrical Calc Pro also leads on rating (5.0 vs 3.9) and iOS requirement (8.0 vs 15.1). Kopperfield's advantage is price (Free vs $19.99) and ratings volume (9 vs 1). On update cadence, ads, 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
Kopperfield is free to download; Electrical Calc Pro costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Electrical Calc Pro holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: Kopperfield has 9 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 60% of Electrical Calc Pro's written reviews are positive against 0% of Kopperfield's.
Electrical Calc Pro ships an update every 5 weeks, Kopperfield every 3 weeks. The most recent releases landed on October 5, 2026 and October 3, 2026 respectively.
| Parameter | Electrical Calc Pro | Kopperfield |
|---|---|---|
| Price | $19.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | 3.9 (9 ratings) |
| Positive reviews | 60.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 1 | 9 — better |
| Update frequency | Every 5 weeks | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Ad-supported — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 22 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | Snappy Appz Inc. | Kopperfield |
Customer experience
Electrical Calc Pro
Kopperfield
In-app purchases
Electrical Calc Pro
No in-app purchases
Kopperfield
No in-app purchases
Questions
Is Electrical Calc Pro free?
Is Kopperfield free?
Which has better reviews, Electrical Calc Pro or Kopperfield?
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