# Regulator Support vs Transformer Calculator Plus

The clearest difference is price: Regulator Support at Free against Transformer Calculator Plus's $2.99. Regulator Support also leads on update cadence (every 2 months vs every 45 months) and iOS requirement (8.0 vs 13.0). On ads, in-app purchases and device support there is nothing between them.

Regulator Support is free to download; Transformer Calculator Plus costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Regulator Support ships an update every 2 months, Transformer Calculator Plus every 45 months. The most recent releases landed on October 8, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Regulator Support | Transformer Calculator Plus |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | — | **[3.3 (4 ratings)](https://appshunter.io/ios/app/transformer-calculator-plus/id1372528401/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 45 months |
| Monetization | — | Paid |
| Size | 4 MB | 1 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Emerson Process Management](https://appshunter.io/developer/561985742) | [Nitrio](https://appshunter.io/developer/321121189) |

## What reviewers say

### Regulator Support

[App page](https://appshunter.io/ios/app/regulator-support/id1126099088)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 Regulator Support free?

Regulator Support is free to download, with no in-app purchases.

### Is Transformer Calculator Plus free?

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

### Do Regulator Support or Transformer Calculator Plus have ads?

Neither Regulator Support nor Transformer Calculator Plus shows ads.

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

Regulator Support ships an update every 2 months, and Transformer Calculator Plus every 45 months. Most recently, Regulator Support was updated on October 8, 2026 and Transformer Calculator Plus on September 28, 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.*