# RF vs RCircuitCalc

The clearest difference is review sentiment: RF at 91% against RCircuitCalc's 0%. RF also leads on rating (4.9 vs 1.0) and update cadence (every 4 months vs every 17 months). RCircuitCalc's advantage is price ($1.99 vs $7.99). On ads, in-app purchases, monetization model and device support there is nothing between them.

RF costs $7.99 and RCircuitCalc $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

RF holds the better App Store score, 4.9 against 1.0. Both are backed by a comparable volume of ratings — 22 and 5 respectively. Written reviews point the same way: 91% of RF's written reviews are positive against 0% of RCircuitCalc's.

RF ships an update every 4 months, RCircuitCalc every 17 months. The most recent releases landed on September 22, 2026 and June 8, 2026 respectively.

## The numbers

| Metric | RF | RCircuitCalc |
| --- | --- | --- |
| Price | $7.99 | **$1.99** |
| Rating | **[4.9 (22 ratings)](https://appshunter.io/ios/app/rf-toolbox-pro/id593044099/reviews)** | [1.0 (5 ratings)](https://appshunter.io/ios/app/rcircuitcalc/id857468508/reviews) |
| Number of ratings | **22** | 5 |
| Positive reviews | **91.1% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 17 months |
| Monetization | Paid | Paid |
| Size | 92 MB | 7 MB |
| Requires iOS | **11.1** | 13.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Marcus Roskosch](https://appshunter.io/developer/334053438) | [TAKAHIKO FUKUYAMA](https://appshunter.io/developer/857468511) |

## What reviewers say

### RF

[App page](https://appshunter.io/ios/app/rf-toolbox-pro/id593044099)

This app provides over 90 specialized tools for high-frequency electronics, catering to RF professionals, radio amateurs, and students. It offers calculations for PCB traces, filters, impedance, and more, with ongoing updates and new features planned.

**Highlights:** PCB Trace Width and Impedance, LC/L/T/Pi Match Calculation, Coax Cable Calculations, Amplifier and Attenuator Cascade, SWR/Reflection/Return Loss Conversion, Filter Design (Butterworth, Chebyshev), RF Units Conversion

**In-app purchases:** none


### RCircuitCalc

[App page](https://appshunter.io/ios/app/rcircuitcalc/id857468508)

This app helps engineers and students design electrical and electronic circuits by calculating standard resistance values based on E-series numbers. It supports various circuit types, including voltage dividers, series, parallel, and combination circuits, and can also calculate current and power for each resistor.

**Highlights:** Calculates standard resistance values, Supports voltage dividers, series, parallel, and combination circuits, Calculates current and power for resistors, Outputs resistance values based on E-series numbers (E6, E12, E24, E48, E96), Calculations based on input voltage, output voltage, current, and resistance ratio

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RF free?

RF costs $7.99, with no in-app purchases.

### Is RCircuitCalc free?

RCircuitCalc costs $1.99, with no in-app purchases.

### Which has better reviews, RF or RCircuitCalc?

RF is rated higher. RF averages 4.9 out of 5 from 22 ratings, while RCircuitCalc averages 1.0 from 5 ratings.

### Do RF or RCircuitCalc have ads?

Neither RF nor RCircuitCalc shows ads.

### Which is updated more often, RF or RCircuitCalc?

RF ships an update every 4 months, and RCircuitCalc every 17 months. Most recently, RF was updated on September 22, 2026 and RCircuitCalc on June 8, 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.*