# Frequency Conversion vs Electrical Calculator Pro

The clearest difference is price: Electrical Calculator Pro at Free against Frequency Conversion's $2.99. Frequency Conversion's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Electrical Calculator Pro is free to download; Frequency Conversion costs $2.99 up front. Electrical Calculator Pro sells 1 one-off in-app purchase. Frequency Conversion asks for nothing beyond the download.

## The numbers

| Metric | Frequency Conversion | Electrical Calculator Pro |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 22 months | — |
| Size | 2 MB | 8 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Heng Jia Liang](https://appshunter.io/developer/1532000635) | [Do Tri](https://appshunter.io/developer/846531282) |

## What reviewers say

### Frequency Conversion

[App page](https://appshunter.io/ios/app/frequency-conversion/id6444392460)

**Features:** macOS Compatibility

**In-app purchases:** none


### Electrical Calculator Pro

[App page](https://appshunter.io/ios/app/electrical-calculator-pro/id6759329271)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $9.99 | one-time |


## Frequently asked questions

### Is Frequency Conversion free?

Frequency Conversion costs $2.99, with no in-app purchases.

### Is Electrical Calculator Pro free?

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

### Do Frequency Conversion or Electrical Calculator Pro have ads?

Electrical Calculator Pro shows ads; Frequency Conversion 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.*