by Marcus Roskosch

Highly productive Apps for engineers, students, hobbyists, HAMs and technical enthusiasts

The Apps ...

All Apps have been developed because they were missing or because there were no adequate solutions available on the App Stores - so I had to develop them on my own, and here we are ...

SmartSDR for iOS

FlexRadio Systems official SDR Client

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Convenient Operating using your iPad or iPhone

SmartSDRâ„¢ for iOS illustrates the versatility of the SmartSDR ecosystem when paired with the FLEX-6000 Signature Series SDR to utilize Apple mobile devices for radio operations. It was designed for those who want to have all the features (and even more) of SmartSDR for Windows on their mobile device either to operate from home or remotely.

Electronic Toolbox and RF-Toolbox

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Electronic Toolbox
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Electronics at your fingertips

#1 App for engineers, students, hobbyists and HAMs

Electronic Toolbox


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Electronic Project Editor - for Windows

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Electronic Project Editor

Now, you can design your Electronic Circuits and maintain your Projects on Windows.

Electronic Project Editor is fully compatible with Electronic Toolbox and RF-Toolbox for iOS.



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The Network Security App

Rewarded “Best of the Year” in 2013 by PC Magazine. Network WiFi Scanning for professionals and beginners

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Scanner Software for AOR AR-DV1 SDR

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Great software for a great Scanner!

Manage the AOR AR-DV1 Software Defined Radio using this App.

This Radio Scanner App is designed to get everything out of your Scanner.

Frequency Scanning was never easier.

Tesla Explorer

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Get everything out of your Tesla !

A Tesla Car is a Computer on wheels. It provides loads of data and information and can be controlled in many ways. Tesla Explorer is the right Tool for you if you like to Explore your Car in-depth.

iCluster - DX-Cluster database

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Don't miss a spot

Your handy DX-Cluster real-time connection. Never miss a spot anymore. Get alarmed for Calls, DXCCs and your most wanted countries.

Get licensed for HAM Radio

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Prepare for your HAM Radio license

These Apps helps to learn for the HAM Radio License Exam. It covers the German A and E Classes as well as the US Technician, General and Extra Classes

Get in touch

Any questions, suggestions or issues ? Please leave a message and I will come back to you shortly.

Use my App

If you already own one of my Apps and if you contacting me regarding this App, please use the Support button located in the settings section.


If you are using this contact form, please double check your Email address. I often receive messages where it turned out that the sender entered a wrong Email address.

I will get back to you - promised

I will always respond. Sometimes I get hundreds of mails per day so please be patient.