# VoltBook — Professional Elec Tools

> Electrician's field toolbox with calculators, code references, and job documentation. (iPhone/iPad app by Edward Anthony Whitfield.)

- Source: https://appshunter.io/ios/app/voltbook/id6801197459 (this page in markdown: same URL + `.md`)
- Developer: [Edward Anthony Whitfield](https://appshunter.io/developer/1836823655)
- Category: Productivity, Education
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 17+
- Requires: iOS 15.1 · 60 MB
- Languages: American English
- Released: 2026-08-19
- Data updated: 2026-10-08
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/voltbook/id6801197459/reviews.md

## What is VoltBook?

VoltBook is the electrician's field toolbox: fast, accurate electrical calculators, searchable code references, and job documentation — built for the panel room, the lift, and the trench. All 75 calculators and every table are free and work fully offline, forever — no account required.

75 CALCULATORS, 14 CATEGORIES
• Electrical basics — Ohm's law, AC power, power factor, energy cost
• Conductors — voltage drop, ampacity, temperature and fill derating
• Raceway — conduit fill and minimum size, with a custom cable library
• Conduit and tube bending — offsets, saddles, stubs, kicks, segment bends
• Motors, transformers, and VFDs — FLC, kVA, OCPD, overloads, V/Hz
• Grounding and OCPD — EGC, GEC, continuous loads, breaker sizing
• Fault current, instrumentation loops, PLC scaling, and unit conversions

Results show their NEC references, and you can switch between the 2020, 2023, and 2026 editions. Save any calculation to a project for later.

REFERENCE, WITHOUT THE FLIPPING
Ampacity, conduit fill, grounding, and motor tables in a searchable format, plus a full electrical symbol library and step-by-step bending guides.

AI THAT KNOWS THE TRADE
Every plan includes AI requests each month — no account, key, or setup needed. Describe the job in plain language and the AI Assistant runs the verified calculators for you. Ask AI on any calculator to explain results or draft field notes, and use the Nameplate Scanner to pull data straight off motor, transformer, and VFD nameplates.

VOLTBOOK PRO
The calculators stay free forever. Pro unlocks the documentation workflow:
• Unlimited projects and saved calculations
• Material lists you can check off at the counter and send by text or email
• Branded PDF calculation sheets and photo field reports
• 500 AI requests a month (Free includes 5)
• Bring your own OpenAI, Anthropic, Gemini, or OpenRouter API key for unlimited AI — usage billed by your provider, and your key never leaves your device

Pro is available as a monthly or annual subscription. Payment is charged to your Apple ID, and subscriptions renew automatically unless canceled at least 24 hours before the end of the period. Manage or cancel anytime in your App Store settings.

VoltBook is a professional aid — always verify results against the applicable code and local amendments before installation.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://voltbook.app/Home/Privacy

## Key features

- 75+ electrical calculators
- Searchable NEC code references (2020, 2023, 2026)
- Offline functionality
- AI Assistant for calculations and notes
- Nameplate Scanner for equipment data
- Job documentation and material lists (Pro)

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Pro Monthly | $4.99 | per month |
| Pro Annual | $39.99 | per year |


## Is VoltBook safe?

Not enough ratings yet to assess VoltBook.

## Is VoltBook legit?

VoltBook has limited verification signals. The AppsHunter Legitimacy Score for VoltBook is 58 out of 100 points across 7 verification signals from App Store and developer data.

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/voltbook/id6801197459/reviews.md

### 5/5 — Love the free tools

*2026-08-26*

Really enjoy all the free calculators. When I am in the field, a lot of of the times we don’t have cell phone reception and these calculators continue to work.

## Frequently asked questions about VoltBook

### What is VoltBook?

VoltBook is a professional field toolbox for electricians, offering electrical calculators, searchable code references, and job documentation tools. It aims to streamline field work with features like AI assistance and offline access.

### Does VoltBook have ads?

No, VoltBook does not contain advertisements. The core functionality and all 75 calculators are free and work offline without ads.

### What are the subscription options for VoltBook Pro?

VoltBook Pro is available as a monthly subscription for $4.99 or an annual subscription for $39.99. These subscriptions unlock advanced documentation features and increased AI requests.

### Can I use VoltBook offline?

Yes, all 75 calculators and every table in VoltBook are available offline, forever. No account or internet connection is required for these core features.

### How does the AI Assistant in VoltBook work?

The AI Assistant allows you to describe a job in plain language, and it will run verified calculators for you. You can also ask AI to explain results or draft field notes, with a limited number of requests included in the free version.

### What NEC code editions does VoltBook support?

VoltBook supports switching between the 2020, 2023, and 2026 editions of the National Electrical Code (NEC). Results from calculators will show their corresponding NEC references.

### What devices is VoltBook available on?

VoltBook is currently supported on iPhone and iPod devices. The age rating for the app is 17+.

### How often is VoltBook updated?

VoltBook was last updated on August 21, 2026, with version 1.0.11. The app was initially released on August 19, 2026.

## Version history (last 3 releases)

### 1.0.15 — 2026-08-26

Gave the user the ability to rate the VoltBook app from inside the app. The user can access a button from the settings screen to rate the app. Also After three calculations are done a pop-up will ask the user if they are enjoying the app.

### 1.0.11 — 2026-08-21

I added a feature that allows the user to add a key that will allow a free term to try the app without restrictions and without having to pay. Also In-app subscription purchases now available.

### 1.0.9 — 2026-08-19

No release notes.

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## More apps by Edward Anthony Whitfield

- [Site Service Pro Field App](https://appshunter.io/ios/app/site-service-pro-field-app/id6760094408)

All apps by Edward Anthony Whitfield: https://appshunter.io/developer/1836823655

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-08.*