Official FlexRadio Systems® Client for your Mac

SmartSDR is a full featured FlexRadio client that enables your Mac to operate your FlexRadio device.

It is fully compatible to SmartSDR v1, v2 (including SmartLink) and v3 (including MultiFlex and SmartControl).

Important: This App requires a FlexRadio Systems® Series-6000 Software Defined Radio (SDR).


SmartSDR offers all features of SmartSDR for Windows such as:

■ Compatible to macOS Catalina and Big Sur as well as M1 Silicon

■ Unlimited number of Slices, Panadapters (limited only by Radio model)

■ Maintain all Radio, Slice and Panadapter settings

■ SmartLink™ remote access support

■ MultiFlex™ support

■ SmartControl™ support

■ And all the other features of the Windows Version (including Diversity)

There is no longer need for running SmartSDR for Windows on Bootcamp, Parallels or a separate PC because these features are also included:

■ Radio Firmware Updates

■ Setting up and registering SmartLink - you can even maintain multiple SmartLink accounts

■ Installation of Region (Turf) Files

■ Backup / Restore Radio Configuration and Memories

In addition, the following extra features are included:

■ Full featured FT8 / FT4 Tool

■ RTTY now also included

■ Logbook with auto logging and ADIF Im- and UDP Export (Synchronizes with Smartsdr for iOS over iCloud)

■ DX-Cluster Tool

■ Band Plan

■ Voice Macros (Voice keyer)

■ And several additional Tools and features


Even though FT8 is included, you can run this App along with your favorite external Software like WSJT-X, fldigi or others because:

■ CAT Support for FlexRadio CAT, Kenwood TS-2000 emulation and RigCtrl / Hamlib

■ DAX TX and RX audio streaming to any device


■ FlexControl support

■ You can use a Midi Controller (like the CMD-Micro and others) to fully control your Radio

■ CW Straight Key / Paddle via Midi Controller, FTDI Serial Cable or assigned keyboard keys

■ External microphone support (e.g. for USB microphones)

Please note: This is no Catalyst Version of SmartSDR for iOS. This is a completely new written native macOS App.


- A FlexRadio Systems® FLEX-6000 series radio

- A Mac which runs at least Mac OS 10.15


FLEX-6300, FLEX-6400, FLEX-6400M, FLEX-6500, FLEX-6600, FLEX-6600M, FLEX-6700

Find out more here:

Read the Manual:

What’s New

Version 1.9.12

This update includes the following changes and fixes:

◉ The Network performance has been improved

◉ The CW Keyer has been improved

◉ Switching between Iambic and Straight Key via Midi/Keyboard is now working

◉ The FT8 Tool now optionally allows individual frequencies (Manual)

◉ The PSK-Reporter tool received an additional Filter option for the Band

◉ Some minor bug-fixes and UI changes

◉ Preparation for the next macOS Version

The manual for the App as been updated accordingly.

Thanks for your fantastic support and feedback.

Stay safe and healthy!


Marcus, DL8MRE

Ratings and Reviews

5.0 out of 5
22 Ratings

22 Ratings


It Just Works ... Seamlessly

Steve Jobs said, “It Just Works.. Seamlessly.” The same applies to SmartSDR for Mac. This is what Flex users with Macs have been waiting for, and it is well worth the money. I downloaded the app just a few minutes past midnight on the launch day. I fired up my Flex 6700 and 16” MacBook Pro, and I was off to the races. It literally took just a few minutes after downloading to get on the air. The app worked the first time with the settings in the same state that I had left the Flex in when I last used SmartSDR for Windows. A Mac version of FT8 is integral to the program via a drop-down from Tools on the menu bar. The functionality is very close to the WSJT-X standalone version for Windows. Other Tools include a Midi Controller (to replace the USB FlexControl dial which does not work with Mac), a helpful Network Stats pop-up, a Band Plan chart, a call sign lookup function, DX Cluster (your choice of a dozen), and a log book. So far, everything is working just as it should. I have not done any remote operating, however, due to coronavirus travel restrictions, but the SmartLink log-in is part of the app and always available. 73 de NV4NV

Bob44224 ,

Smooth and Excellent

SmartSDR for the Mac made my 6400 almost a new radio. Having struggled with the PC version with driver issues, freezups, lost profiles etc I was about to give up. I switched over to the mac and used DogparkSDR which is excellent in its own right but didn't give me that "SmartSDR Interface Experience". Well, this app does it and more.

Very much appreciating the work that went into this and can recommend it with no reservations.

DC Wright ,

Oustanding Work and Great Support

Marcus' work on this is amazing. It is truly wonderful to be able to leave the WIndows version of SmartSDR behind and have a native Mac app to use. Additionally, Marcus' communication, support, and willingness to accept all suggetions and consider new features means is top notch!

Don't hesitate to puchase this. It is well worth the cost.

Amazing job, Marcus!

App Privacy

The developer, Marcus Roskosch, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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