# Transformer Calculator. vs MAYHAW

The clearest difference is ads: MAYHAW at none against Transformer Calculator.'s shown. MAYHAW also leads on iOS requirement (15.0 vs 17.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Transformer Calculator. sells 1 one-off in-app purchase and MAYHAW sells 1 in-app purchase, starting at $14.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Transformer Calculator. | MAYHAW |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (49 ratings)](https://appshunter.io/ios/app/transformer-calculator/id1506155081/reviews)** | — |
| Number of ratings | **49** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 41 MB | 13 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [LeDoux Construction & Consulting LLC](https://appshunter.io/developer/6802293805) |

## What reviewers say

### Transformer Calculator.

[App page](https://appshunter.io/ios/app/transformer-calculator/id1506155081)

This app simplifies transformer calculations for engineers and students. It accurately computes primary and secondary currents, turns ratios, and secondary voltages based on user inputs for transformer ratings and winding turns.

**Highlights:** Primary and secondary current calculations, Turns ratio determination, Transformer type identification, Secondary voltage calculation, Supports 1Φ and 3Φ phases, User-friendly interface

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Go Pro | $3.99 | one-time |


### MAYHAW

[App page](https://appshunter.io/ios/app/mayhaw/id6802293803)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MAYHAW Standard Monthly | $14.99 | per month |


## Frequently asked questions

### Is Transformer Calculator. free?

Transformer Calculator. is free to download, with in-app purchases available.

### Is MAYHAW free?

MAYHAW is free to download, with in-app purchases available.

### Do Transformer Calculator. or MAYHAW have ads?

Transformer Calculator. shows ads; MAYHAW does not.

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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.*