# Radio & dB Calc vs EIRP Calculator

The clearest difference is update cadence: Radio & dB Calc at every 5 months against EIRP Calculator's every 129 months. Radio & dB Calc also leads on iOS requirement (8.0 vs 17.5). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Radio & dB Calc ships an update every 5 months, EIRP Calculator every 129 months. The most recent releases landed on November 1, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Radio & dB Calc | EIRP Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/radio-and-db-calc/id376559672/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 129 months |
| Monetization | Free | — |
| Size | 1 MB | 0 MB |
| Requires iOS | **8.0** | 17.5 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dioptase](https://appshunter.io/developer/376559675) | [Pulsely Consulting](https://appshunter.io/developer/475349326) |

## What reviewers say

### Radio & dB Calc

[App page](https://appshunter.io/ios/app/radio-and-db-calc/id376559672)

This utility app assists radio engineers with common calculations. It allows for adding and subtracting dB values and converting various radio engineering metrics like noise factor and return loss.

**Highlights:** Add/subtract dB values, Convert Noise Factor, Convert Equivalent Input Noise Temperature, Convert Spectral Power Noise Density, Convert Return Loss, Convert Reflection Coefficient, Convert VSWR, Compute maximum mismatch loss

**Features:** macOS Compatibility

**In-app purchases:** none


### EIRP Calculator

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

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

**In-app purchases:** none


## Frequently asked questions

### Is Radio & dB Calc free?

Radio & dB Calc is free to download, with no in-app purchases.

### Is EIRP Calculator free?

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

### Do Radio & dB Calc or EIRP Calculator have ads?

Neither Radio & dB Calc nor EIRP Calculator shows ads.

### Which is updated more often, Radio & dB Calc or EIRP Calculator?

Radio & dB Calc ships an update every 5 months, and EIRP Calculator every 129 months. Most recently, Radio & dB Calc was updated on November 1, 2026 and EIRP Calculator on October 26, 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.*