Official FlexRadio Systems® Client

SmartSDR is a full featured radio client that enables your iPad or iPhone to operate your FlexRadio device.

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

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

However, the App also contains a FlexRadio Simulator (Demo Mode) so you can try this App even without owning a FlexRadio. PLEASE NOTE: The Demo Mode audio is by far not as good as when connecting the App to a real FlexRadio. That quality is identical to SmartSDR for Windows.


SmartSDR offers almost all features of SmartSDR for Windows such as:

■ New: now supports FT8 and FT4 (iPad and iPhone Max, Firmware 3 required)

■ Creation, maintenance of Slices, TNFs, Filters

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

■ CWX support including Sidetone and live send mode

■ Software Paddle or Straight-Key support

■ Maintain all Radio, Slice and Panadapter settings

■ Support for Memories

■ Profiles integration (TX, Microphone and Global)

■ Audio settings supported including equalizers

■ Support for TX Settings like Power including all Tuning features

■ Transverter support

■ SmartLink™ remote access

■ MultiFlex™ support

■ SmartControl support

■ HomeKit support to control radio, antenna switches etc. remotely

■ Siri shortcut support

For HomeKit, you can use any Power Plug or Switch that are HomeKit compatible.

In addition to SmartSDR for Windows, this App offers these features:

■ Band limits and Band maps and modes will be displayed inside the Pan adapter (In-App Purchase)

■ DX Cluster support which displays spots directly inside the Pan adapter (In-App Purchase)

■ Graphical tuning knob for easy and exact frequency selection.

■ Various additional minor bells and whistles such as easy TNF maintenance,

■ direct Bandwidth selection, Split Mode, instant Memory creation and more.

■ Device logging and device parameter monitoring (e.g. PA Temperature etc.)

■ Logbook integration with ADIF Im- and Export (In-App Purchase)

■ Support for two Bluetooth and USB Controllers (In-App Purchase)

■ Voice Macro recording and playback

There are just a few limitations compared to SmartSDR for Windows which are:

- Only one Panadapter visible at the same time.

- Diversity is not implemented.


- A FlexRadio Systems® FLEX-6000 series radio

- An Apple device such as an iPad, iPhone or iPod Touch which needs to run at least iOS 11

- A newer iPad (Air 2 or newer) or iPhone (7 or better) is recommended


To run this App at your home, nothing else but a regular WiFi connection is needed that can access your FLEX-6000. You can immediately start using the App.

For Remote operation via SmartLink™ a Version 2 License is required for your Radio.

The App supports Splitscreen Multitasking on the newer iPads so you can run SmartSDR in split mode parallel to your browser, Email software or any other App. It is also optimized for the new iPad Pro models.


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 3.9.08

This update will fix a remaining Dark Mode and two other issues.

Marcus, DL8MRE

Ratings and Reviews

4.2 out of 5
49 Ratings

49 Ratings

Bell X-1 ,

Almost perfect

I love this app and it works well. I only wish that the app also supported encode and decode of some basic digital modes like Olivia, PSK31 and RTTY. I would happily pay for the additional capabilities.

Mike, WB8CXO ,

The Premier Flex 6000 client!

SmartSDR iOS is becoming the Premier Flex 6000 client. I use it every day on all my iOS devices even when at the home QTH. This app works when the others fail. Now Marcus has brought FT8 native to iOS and it’s crazy easy to use! Software is the radio. Those who spent thousands for their radios and won’t spring for SmartSDR iOS are just plain missing out. Designed to have the same look and feel as SSDR for Windows, loaded with exclusive features, consistent updates/improvements and excellent support from Marcus, the author. Just get it!

Drpaper ,

Best App for Ham Rsdio

I’ve been using this app since It was first brought iout. I have used it to remote operate my flex 6700 from many countries around in the world

Is truly amazing to be able to remotely control my ham radio station in California by either my iPhone or my iPad. It looks awesome on the iPad Pro.

I specially like the fact that It has alternate color schemes so that my poor old eyes can actually see the meters. And I specially like the fact that it has DX spots on the display. Spots on the display really speed up my workflow when trying to find DX

Bottom line this is probably the coolest way to use ham radio remotely


Marcus Roskosch
65.8 MB

Requires iOS 12.1 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Unrestricted Web Access
In-App Purchases
  1. FlexRadio Device access $59.99
  2. DX-Cluster $5.99
  3. Region 1,2 and 3 Band Plan


  • Family Sharing

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

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