# Radio & dB Calc vs RF Tools ++

The clearest difference is price: Radio & dB Calc at Free against RF Tools ++'s $1.99. Radio & dB Calc also leads on iOS requirement (8.0 vs 17.0). RF Tools ++'s advantage is update cadence (every 2 weeks vs every 5 months). On ads, in-app purchases and device support there is nothing between them.

Radio & dB Calc is free to download; RF Tools ++ costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Radio & dB Calc ships an update every 5 months, RF Tools ++ every 2 weeks. The most recent releases landed on September 7, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Radio & dB Calc | RF Tools ++ |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| 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 2 weeks** |
| Monetization | Free | — |
| Size | 1 MB | 42 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dioptase](https://appshunter.io/developer/376559675) | [Jeff Curtis](https://appshunter.io/developer/358219019) |

## 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


### RF Tools ++

[App page](https://appshunter.io/ios/app/rf-tools-plus-plus/id1548209609)

**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 RF Tools ++ free?

RF Tools ++ costs $1.99, with no in-app purchases.

### Do Radio & dB Calc or RF Tools ++ have ads?

Neither Radio & dB Calc nor RF Tools ++ shows ads.

### Which is updated more often, Radio & dB Calc or RF Tools ++?

Radio & dB Calc ships an update every 5 months, and RF Tools ++ every 2 weeks. Most recently, Radio & dB Calc was updated on September 7, 2026 and RF Tools ++ on September 23, 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.*