# EIRP Calculator vs RF Calc JP

The clearest difference is in-app purchases: EIRP Calculator at none against RF Calc JP's 1. EIRP Calculator also leads on iOS requirement (17.5 vs 26.0). RF Calc JP's advantage is update cadence (every 6 days vs every 129 months). On price, ads and device support there is nothing between them.

Both are free to download. RF Calc JP sells 1 in-app purchase, starting at $0.99 per year. EIRP Calculator asks for nothing beyond the download.

EIRP Calculator ships an update every 129 months, RF Calc JP every 6 days. The most recent releases landed on October 26, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | EIRP Calculator | RF Calc JP |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 129 months | **Every 6 days** |
| Size | 0 MB | 4 MB |
| Requires iOS | **17.5** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Pulsely Consulting](https://appshunter.io/developer/475349326) | [Hashimoto Yoshikazu](https://appshunter.io/developer/6790925881) |

## What reviewers say

### EIRP Calculator

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

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

**In-app purchases:** none


### RF Calc JP

[App page](https://appshunter.io/ios/app/rf-calc-jp/id6815598081)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RF Calc JP Pro (Yearly) | $0.99 | per year |


## Frequently asked questions

### Is EIRP Calculator free?

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

### Is RF Calc JP free?

RF Calc JP is free to download, with in-app purchases available.

### Do EIRP Calculator or RF Calc JP have ads?

Neither EIRP Calculator nor RF Calc JP shows ads.

### Which is updated more often, EIRP Calculator or RF Calc JP?

EIRP Calculator ships an update every 129 months, and RF Calc JP every 6 days. Most recently, EIRP Calculator was updated on October 26, 2026 and RF Calc JP on October 31, 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.*