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Mike Holt's Electrical Toolbox

by Mike Holt Enterprises

iPhone · iPad

Active Last checked 31 Jul 2026

Quick verdict

What it is
Store information collected; independent summary not yet available.
At a glance
  • Free to download

Categories and search queries

Official categories

AppCorpus categories

Key functions

Function Availability Access Scope Evidence
Free app Yes Free Store published

Screens

App Store

8 store screenshots

Mike Holt's Electrical Toolbox ipad screenshot 1
Mike Holt's Electrical Toolbox ipad screenshot 2
Mike Holt's Electrical Toolbox ipad screenshot 3
Mike Holt's Electrical Toolbox ipad screenshot 4

Pricing & paywalls

App Store

  • Free

Ratings & reviews

App Store

4.6 197 ratings · App Store

  1. 5/5Great App

    I love this app and use it to do service calculations in a hurry every day. I would love to see an option to print out my load calc instead of having to email it to myself and printing the email. I also wish that the previous information would be erased when starting a new calculation. Other than that it is great!

    Dk Electrical Solutions · 31 Jul 2026

  2. 1/5Needs a whole overhaul

    The content within the app is not bad, but how the content is set up is. I purchased the Journeyman Library for exam prep. Anytime I start one of the videos when I come back I have no idea what part I was on when I left last. It would be nice to have some-type of completion system when it comes to the video series. There is a bug where if you go wide screen and exit the video player and come back you are unable to go back wide screen. The app is not user friendly it’s an outdated app that needs to be refined and made user friendly.

    Imtoofearless · 31 Jul 2026

  3. 5/5Studying for Journeyman’s Cert

    So far have used the app for several months to get ready for my test and I have to say that it has helped me tremendously! I have been in the Electrical field for ten years and thought I had a big area of expertise but as I kept reading and learning I am definitely humble to say that I am glad to have found this app! Thanks I appreciate everything.

    Import King 2010 · 31 Jul 2026

  4. 5/5Great job Mike

    This is awesome I’ve been waiting for a year, saw it at the seminar and wanted then. Thanks for the release, this will definitely make me more efficient.

    erick005 · 31 Jul 2026

  5. 5/5Nice Work

    Great tool..Hope to see more features....don't mind paying extra.

    Sonic system · 31 Jul 2026

Privacy & accessibility

App Store

Privacy

  • Data Not Collected Developer declared

Accessibility

No accessibility labels collected yet.

Versions

App Store

  • 1.0
  • 1.0.2

    - Version 1.0.2 - - Updated Transformer Calculator Data Values. - Various Backend Change.

  • 1.0.20

    Bug fixes and performance improvements.

  • 1.0.21

    Bug fixes and performance improvements.

  • 1.0.26

    Transformer calculation changes and performance updates.

  • 1.0.27

    Increased Dwelling Load calculator water heater maximum wattage to 30K.

  • 1.0.28

    Updated transformer calculation tables, increased dwelling load quantities, and minor bug fixes.

  • 1.0.29

    Increased max wattage of water heaters to 40,000 watts. Various bug fixes and performance improvements.

  • 1.0.3

    - Version 1.0.3 - - Updated Calculator Results Text for Conductor Sizes. - Various Backend Change.

  • 1.0.30

    Increased the number of EV chargers and Cooling/Heating selections allowed in the Dwelling Load calculator.

  • 1.0.34

    Dwelling Load Heating Fan loads allow values up to 20A. Interface improvements for iOS 17.

  • 1.0.36

    Bug fixes and performance improvements.

  • 1.0.37

    Fix for saving calculations.

  • 1.0.38

    Bug fixes and performance improvements.

  • 1.0.39

    Bug fixes and performance improvements.

  • 1.0.4

    - Version 1.0.4 - - Increased Maximum Dwelling Area Square Footage from 10,000 to 25,000. - Various Backend Changes.

  • 1.0.5

    Updated transformer calculation values.

  • 1.0.6

    Updated home screen and backend changes.

  • 1.0.7

    -Transformer and UI updates.

  • 1.0.8

    Added max protection of 25 amps to cooling calculations.

  • 1.0.9

    Minor release text update.

  • 2.0.01

    Bug fixes and performance improvements.

  • 2.0.02

    Bug fixes and performance improvements.

  • 2.0.03 · 9 Jul 2026

    Bug fixes and performance improvements.

Availability by market

Data quality & evidence

Page completeness
Live store listing
Last verified
31 Jul 2026
Sources
App Store

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