# Transformer Calculator. vs SparkConnect

The clearest difference is ads: SparkConnect at none against Transformer Calculator.'s shown. On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Transformer Calculator. sells 1 one-off in-app purchase and SparkConnect sells 6 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Transformer Calculator. | SparkConnect |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (48 ratings)](https://appshunter.io/ios/app/transformer-calculator/id1506155081/reviews)** | — |
| Number of ratings | **48** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 41 MB | 56 MB |
| Requires iOS | 17.6 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [Evan Kinsey](https://appshunter.io/developer/6777511757) |

## 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 |


### SparkConnect

[App page](https://appshunter.io/ios/app/sparkconnect-electric-toolkit/id6777511635)

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SparkConnect Pro Monthly | $7.99 | per month |
| SparkConnect Pro Annual | $49.99 | per year |
| 15 Spark AI Answers | $1.99 | one-time |
| 50 Spark AI Answers | $4.99 | one-time |
| 150 Spark AI Answers | $9.99 | one-time |
| Lifetime Tools | $29.99 | one-time |


## Frequently asked questions

### Is Transformer Calculator. free?

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

### Is SparkConnect free?

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

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

Transformer Calculator. shows ads; SparkConnect 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.*