# SIMpull 600V Calculator vs Captain Code NEC Code Changes

The clearest difference is rating: SIMpull 600V Calculator at 4.2 against Captain Code NEC Code Changes's 3.4. SIMpull 600V Calculator also leads on review sentiment (75% vs 33%) and ads (none vs shown). Captain Code NEC Code Changes's advantage is iOS requirement (12.0 vs 16.6). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SIMpull 600V Calculator holds the better App Store score, 4.2 against 3.4. That said, the two scores are not equally well evidenced: SIMpull 600V Calculator has 59 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 75% of SIMpull 600V Calculator's written reviews are positive against 33% of Captain Code NEC Code Changes's.

SIMpull 600V Calculator ships an update every 3 months, Captain Code NEC Code Changes every 4 months. The most recent releases landed on September 3, 2026 and June 10, 2026 respectively.

## The numbers

| Metric | SIMpull 600V Calculator | Captain Code NEC Code Changes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (59 ratings)](https://appshunter.io/ios/app/simpull-600v-calculator/id682524729/reviews)** | [3.4 (5 ratings)](https://appshunter.io/ios/app/captain-code-nec-code-changes/id1516284674/reviews) |
| Number of ratings | **59** | 5 |
| Positive reviews | **75.0% of reviews** | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | **Free** | Ad-supported |
| Size | 12 MB | 16 MB |
| Requires iOS | 16.6 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Southwire Company](https://appshunter.io/developer/440338423) | [Leviton Manufacturing Co. Inc.](https://appshunter.io/developer/877607790) |

## What reviewers say

### SIMpull 600V Calculator

[App page](https://appshunter.io/ios/app/simpull-600v-calculator/id682524729)

This app offers multiple calculators for electrical calculations, all linked by wire pull characteristics. It generates NEC® compliant answers for voltage drop, ground wire sizing, ampacity adjustments, and more. Results can be easily emailed.

**Highlights:** Voltage Drop Calculator, Ground Wire Sizing, Ampacity Adjustments, Phase Wire Attributes, Sidewall Tension/Pressure, Reel Sizing, NEC® Compliant Answers, Email Results

**Features:** macOS Compatibility

**In-app purchases:** none


### Captain Code NEC Code Changes

[App page](https://appshunter.io/ios/app/captain-code-nec-code-changes/id1516284674)

This app provides electrical professionals with up-to-date National Electrical Code information. It offers searchable access to code changes, expert analysis, and manufacturer insights, complete with illustrations to aid comprehension.

**Highlights:** Searchable by market vertical, product, or article number, Direct NEC text extraction, Expert analysis from IAEI, Manufacturer input for code intent, Includes photos and illustrations, Tracks code changes from 2014-2023

**In-app purchases:** none


## Frequently asked questions

### Is SIMpull 600V Calculator free?

SIMpull 600V Calculator is free to download, with no in-app purchases.

### Is Captain Code NEC Code Changes free?

Captain Code NEC Code Changes is free to download, with no in-app purchases.

### Which has better reviews, SIMpull 600V Calculator or Captain Code NEC Code Changes?

SIMpull 600V Calculator is rated higher. SIMpull 600V Calculator averages 4.2 out of 5 from 59 ratings, while Captain Code NEC Code Changes averages 3.4 from 5 ratings.

### Do SIMpull 600V Calculator or Captain Code NEC Code Changes have ads?

Captain Code NEC Code Changes shows ads; SIMpull 600V Calculator does not.

### Which is updated more often, SIMpull 600V Calculator or Captain Code NEC Code Changes?

SIMpull 600V Calculator ships an update every 3 months, and Captain Code NEC Code Changes every 4 months. Most recently, SIMpull 600V Calculator was updated on September 3, 2026 and Captain Code NEC Code Changes on June 10, 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.*