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:

■ 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

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

■ DX-Cluster Tool

■ Band Plan

■ 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 Mike support (e.g. for USB Mikes)

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 1.4.12

This update fixes an unfortunate bug in FT8.

Sorry for the inconvenience.

Marcus, DL8MRE

Ratings and Reviews

5.0 out of 5
15 Ratings

15 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

Ozy311 ,

Best version to date!

Marcus is a stellar programmer. His IOS version of SmartSDR is the best mobile radio app period and I used the iPad version as my main radio interface for years. This version is all that but on steroids and tailored to macOS. The program is so fully featured and has every bell and whistle. I'm so glad I can retire Windows on my mac finally. I'm so looking forward to this app on an Arm mac later this year. I will gladly pay the price for this app to support this level of skill. Thank you again for putting so much care into this version as you did on the IOS version. 73 K6OZY

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!


Marcus Roskosch
18.7 MB

macOS 10.15 or later, 64-bit processor



Age Rating


  • Family Sharing

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

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