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
■ 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

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 (3, 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. You can immediately start using the App.


To run SmartSDR on your home network, nothing else is needed but a regular WiFi connection 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 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 2.4.1

This update 2.4.1 fixes the reported Bluetooth issue.

The previous update 2.4.0 contained the following changes and bug-fixes:

■ Aligned with the latest FlexRadio SmartSDR Version 2.x
■ Improved slice touch / moving capabilities
■ Optional display of the S-Meter or dBm value in slice
■ Split mode now working again
■ Wrong Antenna selection fixed
■ Now ATU is only available if the Radio has an antenna Tuner included
■ Bandmap IARU changes are now regarded without App restart
■ Further improvements for the iPhone X
■ Parts of the App have been rewritten and ported to Swift 4 which results in additional speed and stability

Also, a new Feature (Tool) has been added:

■ Voice Macro to record and playback recoded voice (e.g. for calling CQ or responding with 599)

This App is still backward compatible to Version 1 of SmartSDR or can run with the latest SmartSDR version, including SmartLink.

Again, many thanks to all Testers!

vy 73, Marcus, DL8MRE

Ratings and Reviews

4.1 out of 5

16 Ratings

16 Ratings

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

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

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
60.7 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 Signature Series Device Support $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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