Comparison

Mike Holt's Electrical Toolbox vs Electrical Diagram Maker

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 Diagram Maker

Create professional electrical schematics, automotive wiring diagrams, and technical documentation. Offers a wide range of symbols, customizable features, and PDF export for efficient project creation and sharing across Apple devices.

Highlights
  • Create electrical and automotive diagrams
  • Extensive library of dedicated symbols
  • Customizable wire colors and sizes
  • Editable labels and title blocks
  • Cross-device project sharing
  • Professional PDF export (Pro subscription)
Features
Read full description

Electrical Diagram Maker is a practical tool for creating electrical schematics, automotive wiring diagrams, control circuits, installation drawings, and technical documentation on iPhone, iPad, and Mac. Create professional diagrams using ready-to-use symbols, clean 90-degree wiring, customizable wire colors, editable labels, wire size markings, project title blocks, and PDF export. Designed for electricians, automotive technicians, panel builders, engineers, students, installers, and anyone who needs to create or document electrical systems quickly. KEY FEATURES - Create electrical schematics and automotive wiring diagrams - Start electrical or automotive projects with dedicated symbols and templates - Add symbols for power, control, PLC, terminals, motors, lighting, sockets, appliances, circuit breakers, RCD/FID devices, cabinets, junction boxes, solar systems, and more - Use automotive batteries, fuses, relays, switches, sensors, actuators, ECUs, grounds, and multi-pin connectors - Add male and female automotive connectors with 2, 4, 6, 8, 12, 16, or 20 pins - Draw clean 90-degree wire connections with editable routing points - Move individual wiring points to adjust the wire path - Display wire crossings that are not electrically connected - Customize wire colors for easier circuit identification - Show wire sizes directly on the diagram using AWG and mm² labels - Add and edit custom text labels - Resize, rotate, duplicate, and delete symbols - Create multiple portrait or landscape pages - Rename and organize project sheets - Use light and professional dark-blue themes - Add title block details including project name, author, date, file, sheet, page, customer, and drawing title - Share editable project files between Mac, iPad, and iPhone - Import received project files and continue editing them - Export professional PDF drawings with a Pro subscription - Access a built-in user manual from Settings Electrical Diagram Maker helps you create organized technical documentation without complicated CAD software. Start with a blank page or template, place symbols, connect components, add labels, and prepare a clean drawing for installation, diagnostics, planning, study, or customer documentation. PRO SUBSCRIPTION Electrical Diagram Maker Pro unlocks professional PDF export and project information editing. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Mike Holt's Electrical Toolbox4 screens
Electrical Diagram Maker4 screens

Verdict

The call

The clearest difference is rating: Mike Holt's Electrical Toolbox at 4.6 against Electrical Diagram Maker's 1.0. Mike Holt's Electrical Toolbox also leads on in-app purchases (none vs 1) and ratings volume (196 vs 1). Electrical Diagram Maker's advantage is update cadence (weekly vs every 3 months). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Electrical Diagram Maker sells 1 in-app purchase, starting at $4.99 per month. Mike Holt's Electrical Toolbox asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Mike Holt's Electrical Toolbox holds the better App Store score, 4.6 against 1.0. That said, the two scores are not equally well evidenced: Mike Holt's Electrical Toolbox has 196 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Mike Holt's Electrical Toolbox ships an update every 3 months, Electrical Diagram Maker weekly. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

Scorecard6 real differences · 4 level
Mike Holt's Electrical Toolbox versus Electrical Diagram Maker: the parameters behind the verdict, then further details
ParameterMike Holt's Electrical ToolboxElectrical Diagram Maker
PriceFreeFree
Rating4.6 (196 ratings) — better1.0 (1 ratings)
Positive reviews76.7% of reviews—
Number of ratings196 — better1
Update frequencyEvery 3 monthsWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS14.0 — better17.6
Further details — not scored
Size26 MB4 MB
Age rating4+4+
DeveloperMike Holt EnterprisesMirza Pasic

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 Diagram Maker

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

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 Diagram Maker

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Mike Holt's Electrical Toolbox

No in-app purchases

1 purchases

Electrical Diagram Maker

Subscriptions1
  • Electrical Diagram Maker Pro$4.991 Month

Questions

Is Mike Holt's Electrical Toolbox free?
Mike Holt's Electrical Toolbox is free to download, with no in-app purchases.
Is Electrical Diagram Maker free?
Electrical Diagram Maker is free to download, with in-app purchases available.
Which has better reviews, Mike Holt's Electrical Toolbox or Electrical Diagram Maker?
Mike Holt's Electrical Toolbox is rated higher. Mike Holt's Electrical Toolbox averages 4.6 out of 5 from 196 ratings, while Electrical Diagram Maker averages 1.0 from 1 ratings.
Do Mike Holt's Electrical Toolbox or Electrical Diagram Maker have ads?
Neither Mike Holt's Electrical Toolbox nor Electrical Diagram Maker shows ads.
Which is updated more often, Mike Holt's Electrical Toolbox or Electrical Diagram Maker?
Mike Holt's Electrical Toolbox ships an update every 3 months, and Electrical Diagram Maker weekly. Most recently, Mike Holt's Electrical Toolbox was updated on October 21, 2026 and Electrical Diagram Maker on October 24, 2026.

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