Comparison

Mike Holt's Electrical Toolbox vs Electrical Toolkit by HCP

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Mike Holt's Electrical Toolbox

This app provides essential calculations for electricians, inspectors, contractors, and engineers. It helps determine conductor sizing, circuit protection, race sizing, and grounding conductor sizes for various electrical equipment and services.

Highlights
  • Conductor sizing
  • Voltage drop limitations
  • Circuit protection sizing
  • Race sizing
  • Equipment grounding conductor sizing
  • Dwelling-unit service calculations
Features
Read full description

Mike Holt, the industry leader in the electrical industry (MikeHolt.com) has created an amazing, practical and useful app for the electrician, inspector, instructor, contractor and engineer. The app contains conductor sizing (including voltage drop limitations), circuit protection sizing, race sizing, equipment grounding conductor sizing for electric heating equipment (commercial and Residential), air-conditioning equipment (commercial and Residential), motors (commercial and Residential), Transformers (commercial) , and dwelling-unit service calculations and sizing.

About

Electrical Toolkit by HCP

This comprehensive mobile toolkit provides electricians and professionals with essential calculations, NEC-compliant tools, and field utilities. It offers features for conduit bending, fill calculations, load analysis, and various electrical calculators, all designed for speed and clarity.

Highlights
  • Conduit bending calculations
  • NEC-compliant conduit fill
  • Residential load calculations
  • Power and Ohm's Law calculators
  • Wire sizing and voltage drop
  • Offline functionality
Features
Read full description

Transform your electrical work with the most comprehensive mobile toolkit designed specifically for electricians and electrical professionals. This powerful app puts essential calculations, NEC-compliant tools, and field-tested utilities right in your pocket. Conduit Bending Mastery• Offset Calculator: Perfect bends every time with precise measurements • 90-Degree Bends: Calculate stub-ups, kicks, and compound angles • Three & Four-Point Saddles: Navigate obstacles with professional precision • Rolling Offsets: Master complex bends with step-by-step guidance • Conduit Dimensions: Complete reference tables for EMT and RMC NEC-Compliant Conduit Fill • Real-Time Compliance: Instant NEC code compliance checking • Multiple Conductor Types: THWN, THHN, XHHW, and more • Smart Calculations: Automatic derating and fill percentage calculations • Professional Reports: Generate detailed conduit fill reports Residential Load Calculator • Optional Method Calculations: Complete NEC Article 220 compliance • Equipment Database: Extensive library of common electrical equipment • Load Analysis: Detailed breakdown of general, heating, and cooling loads • PDF Reports: Professional load calculations you can share with inspectors Comprehensive Electrical Calculators • Power Conversions: Seamlessly convert between amps, volts, watts, kilowatts, horsepower, and KVA • Ohm's Law Calculator: Instantly solve for voltage, current, power, and resistance • Wire Sizing: Determine minimum wire size based on ampacity requirements with NEC compliance • Voltage Drop Calculator: Precise calculations for single and three-phase systems • Power Factor Calculator: Optimize electrical efficiency with accurate power factor calculations Professional Features • Recently Used Tools: Quick access to your most-used calculators • Offline Capable: All calculations work without internet connection • Clean Interface: Intuitive design that works with work gloves • Instant Results: No waiting - calculations update in real-time• PDF Reports: Professional load calculations you can share with inspectors • Professional Accuracy: Field-tested formulas trusted by thousands of electricians Perfect for: • Licensed Electricians • Electrical Contractors• Electrical Engineers • Apprentices and Students • Electrical Inspectors • Maintenance Technicians Built for speed. Designed for clarity. This app helps you save time, reduce mistakes, and get the job done right—whether you’re a seasoned pro or a new apprentice.

Screenshots

Mike Holt's Electrical Toolbox4 screens
Electrical Toolkit by HCP4 screens

Verdict

The call

The clearest difference is update cadence: Electrical Toolkit by HCP at every 8 days against Mike Holt's Electrical Toolbox's every 3 months. Electrical Toolkit by HCP also leads on review sentiment (86% vs 77%). On price, rating, ratings volume and ads 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.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for Mike Holt's Electrical Toolbox against 4.6 for Electrical Toolkit by HCP. Both are backed by a comparable volume of ratings — 197 and 78 respectively. Written reviews are what separate them: 77% of Mike Holt's Electrical Toolbox's written reviews are positive against 86% of Electrical Toolkit by HCP's.

UpkeepUpdate frequency

Mike Holt's Electrical Toolbox ships an update every 3 months, Electrical Toolkit by HCP every 8 days. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 8 level
Mike Holt's Electrical Toolbox versus Electrical Toolkit by HCP: the parameters behind the verdict, then further details
ParameterMike Holt's Electrical ToolboxElectrical Toolkit by HCP
PriceFreeFree
Rating4.6 (197 ratings)4.6 (78 ratings) — better
Positive reviews76.7% of reviews85.7% of reviews — better
Number of ratings197 — better78
Update frequencyEvery 3 monthsEvery 8 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.0 — better15.1
Further details — not scored
Size26 MB42 MB
Age rating4+4+
DeveloperMike Holt EnterprisesCodefied Inc.

Customer experience

Mike Holt's Electrical Toolbox

All ratings197 ratings
Positive90.4%
Neutral1.5%
Negative8.1%
Written reviews30 reviews
Positive76.7%
Neutral6.7%
Negative16.7%

Electrical Toolkit by HCP

All ratings68 ratings
Positive89.7%
Neutral2.9%
Negative7.4%
Written reviews7 reviews
Positive85.7%
Neutral0.0%
Negative14.3%

Bugs and requests

Mike Holt's Electrical Toolbox

Reported bugs

4 issues
  • Cannot email results
  • Video player widescreen exit bug
  • Previous calculation data not erased
  • App content is outdated

Requested features

6 requests
  • Increase transformer capacity to 225kva
  • Add option to print load calc
  • Update to NEC 2020
  • Add completion system for video series
  • Refine user interface for better usability
Show 1 more
  • Add more features, willing to pay extra

Electrical Toolkit by HCP

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Mike Holt's Electrical Toolbox

No in-app purchases

None

Electrical Toolkit by HCP

No in-app purchases

Questions

Is Mike Holt's Electrical Toolbox free?
Mike Holt's Electrical Toolbox is free to download, with no in-app purchases.
Is Electrical Toolkit by HCP free?
Electrical Toolkit by HCP is free to download, with no in-app purchases.
Which has better reviews, Mike Holt's Electrical Toolbox or Electrical Toolkit by HCP?
Electrical Toolkit by HCP is rated higher. Mike Holt's Electrical Toolbox averages 4.6 out of 5 from 197 ratings, while Electrical Toolkit by HCP averages 4.6 from 78 ratings.
Do Mike Holt's Electrical Toolbox or Electrical Toolkit by HCP have ads?
Neither Mike Holt's Electrical Toolbox nor Electrical Toolkit by HCP shows ads.
Which is updated more often, Mike Holt's Electrical Toolbox or Electrical Toolkit by HCP?
Mike Holt's Electrical Toolbox ships an update every 3 months, and Electrical Toolkit by HCP every 8 days. Most recently, Mike Holt's Electrical Toolbox was updated on October 26, 2026 and Electrical Toolkit by HCP on October 24, 2026.

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