# Electrical Calculator vs Transformer Calculator Plus

The clearest difference is review sentiment: Electrical Calculator at 53% against Transformer Calculator Plus's 0%. Electrical Calculator also leads on rating (4.6 vs 3.3) and update cadence (every 4 months vs every 45 months). Transformer Calculator Plus's advantage is price ($2.99 vs $3.99) and iOS requirement (13.0 vs 17.6). On ads, in-app purchases and device support there is nothing between them.

Electrical Calculator costs $3.99 and Transformer Calculator Plus $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Electrical Calculator holds the better App Store score, 4.6 against 3.3. That said, the two scores are not equally well evidenced: Electrical Calculator has 462 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 53% of Electrical Calculator's written reviews are positive against 0% of Transformer Calculator Plus's.

Electrical Calculator ships an update every 4 months, Transformer Calculator Plus every 45 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Electrical Calculator | Transformer Calculator Plus |
| --- | --- | --- |
| Price | $3.99 | **$2.99** |
| Rating | **[4.6 (462 ratings)](https://appshunter.io/ios/app/electrical-calculator/id495478153/reviews)** | [3.3 (4 ratings)](https://appshunter.io/ios/app/transformer-calculator-plus/id1372528401/reviews) |
| Number of ratings | **462** | 4 |
| Positive reviews | **53.3% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 45 months |
| Monetization | **Free** | Paid |
| Size | 18 MB | 1 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [Nitrio](https://appshunter.io/developer/321121189) |

## What reviewers say

### Electrical Calculator

[App page](https://appshunter.io/ios/app/electrical-calculator/id495478153)

This app provides over 65 essential electrical calculation tools and formulas for engineers, students, and professionals. It supports both USCS and SI units and includes features like resistor color code conversion and upgraded voltage drop calculations aligned with industry standards.

**Highlights:** Over 65 electrical calculation tools, Resistor color code calculators, Upgraded voltage drop calculations, Wire size calculations, Series/parallel circuit calculations, Energy cost calculator, Unit conversions

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Great app, useful for years
- 👍 Good app
- 👍 Brilliant Program
- 👍 Essential shortcut for professionals
- 👍 Works great

**What reviewers complain about**

-  annoyance: popup advising update
- 💸 Paid for calculators, then asked for more
- 💸 Lost money
- 💸 Costs extra for full content
- 📏 No impedance calculators

**Reported bugs**

- Annoying popup for app update
- Converter not working
- App not working on older iPhone models

**Requested features**

- Include impedance calculators
- Improve metric region compatibility for AWG cables


### 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


## Frequently asked questions

### Is Electrical Calculator free?

Electrical Calculator costs $3.99, with no in-app purchases.

### Is Transformer Calculator Plus free?

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

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

Electrical Calculator is rated higher. Electrical Calculator averages 4.6 out of 5 from 462 ratings, while Transformer Calculator Plus averages 3.3 from 4 ratings.

### Do Electrical Calculator or Transformer Calculator Plus have ads?

Neither Electrical Calculator nor Transformer Calculator Plus shows ads.

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

Electrical Calculator ships an update every 4 months, and Transformer Calculator Plus every 45 months. Most recently, Electrical Calculator was updated on October 23, 2026 and Transformer Calculator Plus 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.*