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

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:

■ 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
■ 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 and full Duplex are not yet 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 10
- A newer iPad (Air 2 or newer) or iPhone (5s 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 2.9.5

This Update 2.9. provides many improvements and a few additional Tools.


■ New Network Stats Tool to monitor network quality
■ Now supporting the new FlexRadio network MTU size enforcement
■ Introduced "keep alive" packets for networks which may require some continuous traffic
■ The Radio Chooser (i) screen now informs if the local Radio is connected to the Internet and reachable via SmartLink


■ Now supporting Apple HomePod and Apple TV playback using AirPlay 2 (only available when "Listen only mode" enabled)
■ It is now possible to select and change the Audio device from the left Audio menu
■ Several Audio settings moved from the Settings screen to the left Audio menu


It is now possible to use HomeKit devices from inside the App. This way, you can easily power on your Radio remotely or even switch Antennas etc. You only need Power Plugs or Switches that are HomeKit compatible.


You can now create Siri Shortcuts to change Frequencies, Bands or Modes.


■ Voice Macro Selection button now on top of the Screen (iPad only)
■ TNFs now colored correctly depending on type
■ Permanent TNFs can now no longer be moved
■ S-Meter Color reversed
■ Some Settings have been moved out of the large Settings screen to other locations and to a new "Extended Settings" sub-menu under the main Settings screen
■ Added: New "MEM ->" Button for selecting Memories (iPad only)


■ Fixed tuning wheel to disappear on slight device movements
■ Fixed MEM Button to generate two entries
■ Fixed noise when in transmit mode
■ Fixed missing Stop button on CWX and Macro windows


■ Social Logins removed from SmartLink. (Can be re-enabled in Extended Settings)
■ A few new Settings added which were introduced by FlexRadio firmware 2.4.
■ A new Flic button setting should reduce the button latency

An update manual is available at which includes more details about these changes.

vy 73,
Marcus, DL8MRE

Ratings and Reviews

4.0 out of 5
24 Ratings
24 Ratings
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

Fly-Caster ,

Excellent remote operating option for Flex-6000 radios

This is a excellent program with very similar look and feel of the main SSDR for Windows program. In some ways it is even better.

Several add-on programs offer logging, DC Cluster, Spots on the Panadapter, and alternative rig control with other devices.

It works very well on your LAN via WiFi.
It also works seamlessly via the WAN using the SmartLink system pioneered by FlexRadio.

If have an iPhone or iPad, you need this app whether you operate from the den, backyard, or across the country!

Ken - NM9P

DogZW ,

Go-To App for FlexRadio

SmartSDR for iOS is not only a great implementation of the SmartSDR style program but adds great features. I use the in-App purchases of the Logbook, Band Plan and DX Cluster with great success.

Using the software has made it easy to work my station when traveling, adding to my ham radio experience.

The developer makes his App users feel like “old friends” when supporting them through online forums. That sure adds to the positive experience.




Marcus Roskosch
79.8 MB
Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
You must be at least 17 years old to download this app.
Unrestricted Web Access
© Marcus Roskosch
In-App Purchases
  1. FlexRadio Device access $59.99
  2. DX-Cluster $5.99
  3. Region 1,2 and 3 Band Plan $5.99


  • Family Sharing

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

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