# Mike Holt's Electrical Toolbox vs Electrical Diagram Maker

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.

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.

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.

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.

## The numbers

| Metric | Mike Holt's Electrical Toolbox | Electrical Diagram Maker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (196 ratings)](https://appshunter.io/ios/app/mike-holts-electrical-toolbox/id1406630647/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/electrical-diagram-maker/id6784986038/reviews) |
| Number of ratings | **196** | 1 |
| Positive reviews | 76.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | **Free** | Freemium |
| Size | 26 MB | 4 MB |
| Requires iOS | **14.0** | 17.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Mike Holt Enterprises](https://appshunter.io/developer/1349960186) | [Mirza Pasic](https://appshunter.io/developer/1863048976) |

## What reviewers say

### Mike Holt's Electrical Toolbox

[App page](https://appshunter.io/ios/app/mike-holts-electrical-toolbox/id1406630647)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Great app for electricians
- 💡 Provides code article references
- 👍 Useful for on-the-spot reference
- 👍 Excellent for verifying calculations
- 👍 Helpful for exam preparation

**What reviewers complain about**

- 🐛 Emailing results not working
- 🐛 Outdated information
- 🐛 Load calc a little clunky
- 🐛 Content setup needs overhaul
- 🐛 Video series lacks completion system

**Reported bugs**

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- App content is outdated

**Requested features**

- 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


### Electrical Diagram Maker

[App page](https://appshunter.io/ios/app/electrical-diagram-maker/id6784986038)

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:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Electrical Diagram Maker Pro | $4.99 | per month |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*