# Transformer Calculator Plus vs Transformer Calc 2

The clearest difference is rating: Transformer Calculator Plus at 3.3 against Transformer Calc 2's 1.0. Transformer Calculator Plus also leads on ratings volume (4 vs 1) and price ($2.99 vs $3.99). Transformer Calc 2's advantage is update cadence (every 2 months vs every 45 months). On review sentiment, ads, in-app purchases and monetization model there is nothing between them.

Transformer Calculator Plus costs $2.99 and Transformer Calc 2 $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Transformer Calculator Plus holds the better App Store score, 3.3 against 1.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

Transformer Calculator Plus ships an update every 45 months, Transformer Calc 2 every 2 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Transformer Calculator Plus | Transformer Calc 2 |
| --- | --- | --- |
| Price | **$2.99** | $3.99 |
| Rating | **[3.3 (4 ratings)](https://appshunter.io/ios/app/transformer-calculator-plus/id1372528401/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/transformer-calc-2/id1597015791/reviews) |
| Number of ratings | **4** | 1 |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 45 months | **Every 2 months** |
| Monetization | Paid | Paid |
| Size | 1 MB | 16 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [Snappy Appz Inc.](https://appshunter.io/developer/375591377) |

## 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


### Transformer Calc 2

[App page](https://appshunter.io/ios/app/transformer-calc-2/id1597015791)

This app provides electricians with instant transformer sizing and advanced construction math, compliant with both US (NEC 2023) and Canadian (CEC 2024) electrical codes. It simplifies complex calculations for wire, conduit, and overcurrent protection, and includes a fractional construction calculator.

**Highlights:** Dual code compliance (NEC 2023, CEC 2024), Instant transformer sizing, Wire and conduit sizing, Overcurrent protection calculation, Fractional construction calculator, Unit conversion, Dark mode support

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

**In-app purchases:** none


## Frequently asked questions

### Is Transformer Calculator Plus free?

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

### Is Transformer Calc 2 free?

Transformer Calc 2 costs $3.99, with no in-app purchases.

### Which has better reviews, Transformer Calculator Plus or Transformer Calc 2?

Transformer Calculator Plus is rated higher. Transformer Calculator Plus averages 3.3 out of 5 from 4 ratings, while Transformer Calc 2 averages 1.0 from 1 ratings.

### Do Transformer Calculator Plus or Transformer Calc 2 have ads?

Neither Transformer Calculator Plus nor Transformer Calc 2 shows ads.

### Which is updated more often, Transformer Calculator Plus or Transformer Calc 2?

Transformer Calculator Plus ships an update every 45 months, and Transformer Calc 2 every 2 months. Most recently, Transformer Calculator Plus was updated on November 2, 2026 and Transformer Calc 2 on November 3, 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.*