Electrical Calc Pro vs Building Wire Selector
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.
Building Wire Selector
This tool helps determine the correct conductor size and wire type for electrical installations. It adheres to the National Electrical Code® wiring methods, ensuring compliance and safety.
- Conductor size determination
- Wire and cable type selection
- National Electrical Code compliance
- Electrical installation guidance
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Southwire's Building Wire Selector determines the minimum conductor size and the best wire and cable type for a particular installation, following the National Electrical Code® wiring methods.
Screenshots
Verdict
The clearest difference is price: Building Wire Selector at Free against Electrical Calc Pro's $19.99. Building Wire Selector also leads on review sentiment (100% vs 60%). Electrical Calc Pro's advantage is update cadence (every 5 weeks vs every 5 months) and iOS requirement (8.0 vs 16.6). On rating, 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
Building Wire Selector 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.
On the App Store both sit at effectively the same score — 5.0 for Electrical Calc Pro against 5.0 for Building Wire Selector. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews are what separate them: 60% of Electrical Calc Pro's written reviews are positive against 100% of Building Wire Selector's.
Electrical Calc Pro ships an update every 5 weeks, Building Wire Selector every 5 months. The most recent releases landed on October 5, 2026 and September 29, 2026 respectively.
| Parameter | Electrical Calc Pro | Building Wire Selector |
|---|---|---|
| Price | $19.99 | Free — better |
| Rating | 5.0 (1 ratings) | 5.0 (2 ratings) |
| Positive reviews | 60.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 5 weeks — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 8.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 22 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Snappy Appz Inc. | Southwire Company |
Customer experience
Electrical Calc Pro
Building Wire Selector
In-app purchases
Electrical Calc Pro
No in-app purchases
Building Wire Selector
No in-app purchases
Questions
Is Electrical Calc Pro free?
Is Building Wire Selector free?
Which has better reviews, Electrical Calc Pro or Building Wire Selector?
Do Electrical Calc Pro or Building Wire Selector have ads?
Which is updated more often, Electrical Calc Pro or Building Wire Selector?
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