# EIRP Calculator vs Frequency Conversion

The clearest difference is price: EIRP Calculator at Free against Frequency Conversion's $2.99. Frequency Conversion's advantage is update cadence (every 22 months vs every 129 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

EIRP Calculator is free to download; Frequency Conversion costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

EIRP Calculator ships an update every 129 months, Frequency Conversion every 22 months. The most recent releases landed on September 13, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | EIRP Calculator | Frequency Conversion |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 129 months | **Every 22 months** |
| Size | 0 MB | 2 MB |
| Requires iOS | **17.5** | 17.6 |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Pulsely Consulting](https://appshunter.io/developer/475349326) | [Heng Jia Liang](https://appshunter.io/developer/1532000635) |

## What reviewers say

### EIRP Calculator

[App page](https://appshunter.io/ios/app/eirp-calculator/id785448118)

**Features:** macOS Compatibility

**In-app purchases:** none


### Frequency Conversion

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is EIRP Calculator free?

EIRP Calculator is free to download, with no in-app purchases.

### Is Frequency Conversion free?

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

### Do EIRP Calculator or Frequency Conversion have ads?

Neither EIRP Calculator nor Frequency Conversion shows ads.

### Which is updated more often, EIRP Calculator or Frequency Conversion?

EIRP Calculator ships an update every 129 months, and Frequency Conversion every 22 months. Most recently, EIRP Calculator was updated on September 13, 2026 and Frequency Conversion on September 11, 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.*