RF-Toolbox Pro
Not in any tracked top chart right now.
Updated 19 Oct 2026 · rankings refresh through the day
DeveloperMarcus Roskosch
CategoryProductivity
Price7.99 GBP
Released
Rating★ 4.9 (7)
Version14.5.01
Age rating4+
First seen by us
12 Oct 2026
Installs (est.)1k+ worldwide
Rating
4.9 ★
7 ratings
Measured
RF-Toolbox Pro on the App Store
App details
App ID
593044099
Publisher
Marcus Roskosch
On the store since
Jan 2013
13 years on the store
Minimum OS
iOS 11.1+
iPhone 5s and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
7
EN FR DE IT ZH ES ZH
Size
96 MB
RF-Toolbox Pro downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. iPhone downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
4.9 ★
7 ratings
Measured
Ratings
7
Measured
About RF-Toolbox Pro
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
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
Latest updates
14.5.01
This update includes the following changes and fixes:
◉ Further improvements for a next iOS Version
◉ Some bug fixes and improvements
◉ Several changes under the hood
Thanks for your great support and feedback which helps to further improve this App.
Please use the Contact Developer feature inside the App to contact me in case of questions or issues.
Stay safe and healthy!
Best regards,
Marcus