# Electronic Toolbox Pro vs 2017 Master Electrician Ref.

Electronic Toolbox Pro and 2017 Master Electrician Ref. both sit at 4.7 stars, but that hides the real split: 93% of Electronic Toolbox Pro's written reviews are positive against 67% of 2017 Master Electrician Ref.'s. Electronic Toolbox Pro also leads on update cadence (every 2 months vs every 5 months). 2017 Master Electrician Ref.'s advantage is price ($9.99 vs $12.99) and chart position (#182 vs unranked). On rating, ads, in-app purchases and monetization model there is nothing between them.

Electronic Toolbox Pro costs $12.99 and 2017 Master Electrician Ref. $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.7 for Electronic Toolbox Pro against 4.7 for 2017 Master Electrician Ref.. That said, the two scores are not equally well evidenced: 2017 Master Electrician Ref. has 1.3K ratings behind it against 245, so its average is the more settled of the two. Written reviews are what separate them: 93% of Electronic Toolbox Pro's written reviews are positive against 67% of 2017 Master Electrician Ref.'s.

Electronic Toolbox Pro ships an update every 2 months, 2017 Master Electrician Ref. every 5 months. The most recent releases landed on October 20, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Electronic Toolbox Pro | 2017 Master Electrician Ref. |
| --- | --- | --- |
| Price | $12.99 | **$9.99** |
| Rating | [4.7 (245 ratings)](https://appshunter.io/ios/app/electronic-toolbox-pro/id339158729/reviews) | [4.7 (1.3K ratings)](https://appshunter.io/ios/app/2017-master-electrician-ref/id1275949959/reviews) |
| Number of ratings | 245 | **1.3K** |
| Positive reviews | **92.6% of reviews** | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Paid | Paid |
| Best chart rank | — | **#182** |
| Size | 201 MB | 46 MB |
| Requires iOS | **11.1** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Marcus Roskosch](https://appshunter.io/developer/334053438) | [PawEng, LLC](https://appshunter.io/developer/390058606) |

## What reviewers say

### Electronic Toolbox Pro

[App page](https://appshunter.io/ios/app/electronic-toolbox-pro/id339158729)

This comprehensive electronics engineering app provides professionals, hobbyists, and students with a vast array of tools and reference materials. It features a circuit editor, numerous calculation and conversion tools, and extensive component specifications with parametric search capabilities.

**Highlights:** Circuit Editor, Component reference with parametric search, Numerous calculation tools, Unit and HEX/Decimal conversion tools, Scientific calculator, frequency generator, oscilloscope, Project diagram and document storage, Reference tools for major development boards

**In-app purchases:** none

**What reviewers like**

- 🚀 Comprehensive database
- 🔍 Detailed component information
- 👍 Intuitive and easy to use
- ⚡ Frequent updates
- 🛠️ Useful calculators and tools

**What reviewers complain about**

- 🐛 Occasional crashes or bugs
- 🔍 Missing some component data
- 🔌 Compatibility issues on older devices

**Reported bugs**

- Equation disappearing in calculator
- Circuit editor not working with touch input

**Requested features**

- More microcontroller and SBC support
- Circuit simulation and design capabilities
- Educational resources and tutorials
- Improved circuit editor functionality


### 2017 Master Electrician Ref.

[App page](https://appshunter.io/ios/app/2017-master-electrician-ref/id1275949959)

**Currently charting:** #182 Top Paid · Productivity (US App Store)

This digital handbook provides electricians and related professionals with essential electrical formulas, diagrams, and reference tables. It offers calculations, a dictionary of terms, and detailed information on wiring, motors, transformers, and more, all accessible on a mobile device.

**Highlights:** Electrical formulas and calculations, Wiring diagrams for various systems, Motor and transformer specifications, Conductor and ampacity tables, Dictionary of electrician terms, NEMA standards and diagrams, Math and conversion tools

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Quick reference
- 🚀 Best app for electrical information
- 🚀 Concise and well-laid out information
- 🚀 Comprehensive electrical references

**What reviewers complain about**

- 🐛 App needs to be updated
- 🐛 Inaccurate information in some areas
- 🐛 Limited functionality compared to expectations
- 🐛 Overlapping table of contents

**Reported bugs**

- Conduit fill information missing for certain types
- Login screen freezes
- Compatibility issues with older devices

**Requested features**

- Update to latest NEC code
- Add calculation tools for conduit fill and voltage drop
- Improve user interface and navigation


## Frequently asked questions

### Is Electronic Toolbox Pro free?

Electronic Toolbox Pro costs $12.99, with no in-app purchases.

### Is 2017 Master Electrician Ref. free?

2017 Master Electrician Ref. costs $9.99, with no in-app purchases.

### Which has better reviews, Electronic Toolbox Pro or 2017 Master Electrician Ref.?

Electronic Toolbox Pro and 2017 Master Electrician Ref. are both rated 4.7 out of 5 on the App Store, from 245 and 1.3K ratings respectively.

### Do Electronic Toolbox Pro or 2017 Master Electrician Ref. have ads?

Neither Electronic Toolbox Pro nor 2017 Master Electrician Ref. shows ads.

### Which is updated more often, Electronic Toolbox Pro or 2017 Master Electrician Ref.?

Electronic Toolbox Pro ships an update every 2 months, and 2017 Master Electrician Ref. every 5 months. Most recently, Electronic Toolbox Pro was updated on October 20, 2026 and 2017 Master Electrician Ref. on October 18, 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.*