# Mike Holt's Electrical Toolbox vs PLC Tools Plus

The clearest difference is in-app purchases: Mike Holt's Electrical Toolbox at none against PLC Tools Plus's 1. Mike Holt's Electrical Toolbox also leads on iOS requirement (14.0 vs 16.4). PLC Tools Plus's advantage is update cadence (every 5 days vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. PLC Tools Plus 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 ships an update every 3 months, PLC Tools Plus every 5 days. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Mike Holt's Electrical Toolbox | PLC Tools Plus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (197 ratings)](https://appshunter.io/ios/app/mike-holts-electrical-toolbox/id1406630647/reviews)** | — |
| Number of ratings | **197** | — |
| Positive reviews | 76.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 26 MB | 60 MB |
| Requires iOS | **14.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mike Holt Enterprises](https://appshunter.io/developer/1349960186) | [JASON THOMAS SERAFIN](https://appshunter.io/developer/6798494967) |

## 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- 🐛 Outdated information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


### PLC Tools Plus

[App page](https://appshunter.io/ios/app/plc-tools-plus/id6798494965)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PLC Tools Plus 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 PLC Tools Plus free?

PLC Tools Plus is free to download, with in-app purchases available.

### Do Mike Holt's Electrical Toolbox or PLC Tools Plus have ads?

Neither Mike Holt's Electrical Toolbox nor PLC Tools Plus shows ads.

### Which is updated more often, Mike Holt's Electrical Toolbox or PLC Tools Plus?

Mike Holt's Electrical Toolbox ships an update every 3 months, and PLC Tools Plus every 5 days. Most recently, Mike Holt's Electrical Toolbox was updated on October 16, 2026 and PLC Tools Plus on October 14, 2026.

---

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