Comparison

RF vs RCircuitCalc

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

RF

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
Read full description

Specialized on high frequency electronics for RF professionals, radio amateurs and students. RF-Toolbox is based on the popular Electronic Toolbox by Marcus Roskosch. This app contains some of the common tools of Electronic Toolbox but contains a wide range of additional tools, specialized for high frequency electronics, RF professionals, radio amateurs and students. Currently RF-Toolbox consists of more than 90 tools and like Electronic Toolbox, there are more to come over the time. Feature list: ■ PCB Trace Width (Internal and external Traces) ■ PCB Trace Resistance ■ PCB Trace Impedance (various trace types e.g. Microstrip, embedded Microstrip, Symmetric and Asymetric Stripline, Wire Microchip, Wire Stripline, Edge Coupled Microstrip and Stripline) PCB Crosstalk (Microstrip and Stripline) ■ LC L/T/Pi Match calculation ■ Coax Cable calculation (Standard and individual Types) ■ Amplifier and Attenuator cascade calculation ■ SWR / Reflection / Return loss conversion ■ Power Divider (Branchline, Ratrace and Wilkinson) ■ Capacitor Plate calculation ■ RLC Parallel, Series and Circuit calculation ■ Noise Figure conversion ■ Skin Depth calculation (various materials from Aluminum to Silver) ■ Butterworth Filter (also with plot of filter chart) ■ Chebyshev Filter (also with plot of filter chart) ■ R-C, L-C, R-L High/Low/Band-Pass Filter ■ RF Units conversion (quick conversion of frequently used units) ■ Air coil inductance calculation ■ Resistors, Capacitors, Inductors in Parallel / Series And there is much more... ■ Aktive Filter calculation tool ■ Antenna calculation tool ■ Delta Star calculation ■ Cable length / ampacity tool ■ PTC / NTC Temperature Resistance conversion ■ AC Ohms law tool ■ Zener diode circuit calculation ■ Constant current source tool ■ ASCII Table ■ Desktop calculator ■ Resistor/Capacitor/Inductor combinations tool ■ 4-20mA conversion tool ■ Passive cooling calculator ■ Audio Oscilloscope Please check out more screen shots on my website (WEBSITE Link on the left side). If you have questions, please feel free to contact me by using the Support button here, inside the App or on my website. Thank you! Marcus Roskosch

About

RCircuitCalc

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
Read full description

This application is intend for engineers and students who are wasting time for designing electric and electronic circuits. The standard resistance values based on E-series numbers are outputted in inputting necessary conditions such as input voltage, output voltage, current and so on. Features The calculable circuits are as follows: - Voltage Dividers (Inputting output voltage or resistance ratio) - Series Circuits - Parallel Circuits - Combination Circuits In the Voltage Dividers, resistance values are calculated in entering input voltage, output voltage or resistance ratio, and current into input boxes, besides, the most suitable resistance values are calculated in selecting priority whether Normal or Vout. In the Series Circuits, Parallel Circuits and Combination Circuits, divided resistance values are calculated in entering a combined resistance value into an input box. Calculated resistance values are displayed with the following E-series number specified either. E6, E12, E24, E48, E96 This application is able to calculate current and power of each resistor on calculated resistance values. Attention Because standard resistors are used and precision of calculation is ensured, the following restrictions are set up. - Range of resistance value: 1Ω ~ 10MΩ - Range of resistance ratio: 0.1 ~ 10

Screenshots

RF4 screens
RCircuitCalc4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard6 real differences · 4 level
RF versus RCircuitCalc: the parameters behind the verdict, then further details
ParameterRFRCircuitCalc
Price$7.99$1.99 — better
Rating4.9 (22 ratings) — better1.0 (5 ratings)
Positive reviews91.1% of reviews — better0.0% of reviews
Number of ratings22 — better5
Update frequencyEvery 4 months — betterEvery 17 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.1 — better13.6
Further details — not scored
Size92 MB7 MB
Age rating4+4+
DeveloperMarcus RoskoschTAKAHIKO FUKUYAMA

Customer experience

RF

All ratings22 ratings
Positive95.5%
Neutral0.0%
Negative4.5%
Written reviews45 reviews
Positive91.1%
Neutral4.4%
Negative4.4%

RCircuitCalc

All ratings5 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

RF

No in-app purchases

None

RCircuitCalc

No in-app purchases

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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