# dB Calculations vs RF calculator & Smith Chart

The clearest difference is price: RF calculator & Smith Chart at Free against dB Calculations's $1.99. dB Calculations's advantage is in-app purchases (none vs 1) and iOS requirement (11.0 vs 15.0). On ads and device support there is nothing between them.

RF calculator & Smith Chart is free to download; dB Calculations costs $1.99 up front. RF calculator & Smith Chart sells 1 one-off in-app purchase. dB Calculations asks for nothing beyond the download.

## The numbers

| Metric | dB Calculations | RF calculator & Smith Chart |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/db-calculations/id6475765536/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 4 months |
| Monetization | Paid | — |
| Size | 27 MB | 31 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | +4 | 4+ |
| Developer | [Gorasiya Vishal Nanjibhai](https://appshunter.io/developer/1287086933) | [Anas Abubakar](https://appshunter.io/developer/1581534101) |

## What reviewers say

### dB Calculations

[App page](https://appshunter.io/ios/app/db-calculations/id6475765536)

This app provides tools for calculating and converting various electrical units. It includes calculators for dBm and voltage levels, as well as a unit converter for a wide range of power and voltage measurements.

**Highlights:** dBm power level calculator, Voltage level calculator, Unit converter for power and voltage, Supports dBm, dBW, mW, W, mV, V, dBV, dBµV, dBu, Accommodates individual impedance values

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

**In-app purchases:** none


### RF calculator & Smith Chart

[App page](https://appshunter.io/ios/app/rf-calculator-and-smith-chart/id6757265018)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| upgrade to pro | $3.99 | one-time |


## Frequently asked questions

### Is dB Calculations free?

dB Calculations costs $1.99, with no in-app purchases.

### Is RF calculator & Smith Chart free?

RF calculator & Smith Chart is free to download, with in-app purchases available.

### Do dB Calculations or RF calculator & Smith Chart have ads?

Neither dB Calculations nor RF calculator & Smith Chart shows ads.

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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.*