# Transformer Calculator Plus vs Electrical Load Calc NEC

The clearest difference is in-app purchases: Transformer Calculator Plus at none against Electrical Load Calc NEC's 1. Electrical Load Calc NEC's advantage is update cadence (every 3 days vs every 45 months) and price ($0.99 vs $2.99). On rating, ratings volume, ads and device support there is nothing between them.

Transformer Calculator Plus costs $2.99 and Electrical Load Calc NEC $0.99 up front. Electrical Load Calc NEC sells 1 one-off in-app purchase. Transformer Calculator Plus asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 3.3 for Transformer Calculator Plus against 3.4 for Electrical Load Calc NEC. Both are backed by a comparable volume of ratings — 4 and 5 respectively.

Transformer Calculator Plus ships an update every 45 months, Electrical Load Calc NEC every 3 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | Transformer Calculator Plus | Electrical Load Calc NEC |
| --- | --- | --- |
| Price | $2.99 | **$0.99** |
| Rating | [3.3 (4 ratings)](https://appshunter.io/ios/app/transformer-calculator-plus/id1372528401/reviews) | **[3.4 (5 ratings)](https://appshunter.io/ios/app/electrical-load-calc-nec/id6763250945/reviews)** |
| Number of ratings | 4 | **5** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 45 months | **Every 3 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 1 MB | 34 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [Rizvan Adzhoian](https://appshunter.io/developer/1891746079) |

## What reviewers say

### Transformer Calculator Plus

[App page](https://appshunter.io/ios/app/transformer-calculator-plus/id1372528401)

This utility app calculates key parameters for transformers, including voltage, current, and turns ratio. It helps determine if a transformer is step-up or step-down, essential for power conversion applications.

**Highlights:** Calculate primary and secondary voltage, Calculate primary and secondary current, Calculate transformer turns ratio, Determine step-up or step-down transformer, Supports AC voltage calculations

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

**In-app purchases:** none


### Electrical Load Calc NEC

[App page](https://appshunter.io/ios/app/electrical-load-calc-nec/id6763250945)

Calculate residential electrical service sizes accurately using NEC standards. This tool provides step-by-step breakdowns, references official articles, and supports multiple NEC editions for electricians and engineers.

**Highlights:** NEC 220.82 Optional Method calculations, Support for NEC 2023 and NEC 2026, Step-by-step breakdown with article references, Appliance presets and custom entry, Service size recommendations, PASS/FAIL check against panel capacity

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Unlock | $2.99 | one-time |


## Frequently asked questions

### Is Transformer Calculator Plus free?

Transformer Calculator Plus costs $2.99, with no in-app purchases.

### Is Electrical Load Calc NEC free?

Electrical Load Calc NEC costs $0.99, and also offers in-app purchases.

### Which has better reviews, Transformer Calculator Plus or Electrical Load Calc NEC?

Electrical Load Calc NEC is rated higher. Transformer Calculator Plus averages 3.3 out of 5 from 4 ratings, while Electrical Load Calc NEC averages 3.4 from 5 ratings.

### Do Transformer Calculator Plus or Electrical Load Calc NEC have ads?

Neither Transformer Calculator Plus nor Electrical Load Calc NEC shows ads.

### Which is updated more often, Transformer Calculator Plus or Electrical Load Calc NEC?

Transformer Calculator Plus ships an update every 45 months, and Electrical Load Calc NEC every 3 days. Most recently, Transformer Calculator Plus was updated on October 24, 2026 and Electrical Load Calc NEC 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.*