# SmartSDR™ - FlexRadio Systems® — Official SDR Client > Official client for FlexRadio Systems® SDR devices on iOS. (iPhone/iPad app by Marcus Roskosch.) - Source: https://appshunter.io/ios/app/smartsdr-flexradio-systems/id1089157289 (this page in markdown: same URL + `.md`) - Developer: [Marcus Roskosch](https://appshunter.io/developer/334053438) - Category: Utilities - Price: $79.99 with in-app purchases (on sale, was $99.99) - Rating: 4.30/5 from 130 App Store ratings · 85 written reviews indexed - Age rating: 4+ - Requires: iOS 17.6 · 60 MB - Languages: American English - Released: 2016-09-02 - Data updated: 2026-08-23 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/smartsdr-flexradio-systems/id1089157289/reviews.md ## What is SmartSDR™? Official FlexRadio Systems® Client - All-Inclusive, no In-App Purchase! 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) and v4. Please note: This App requires a FlexRadio Systems® Series 6000 or 8000 or Aurora Software Defined Radio (SDR) Device. FACTS AND FEATURES: SmartSDR offers almost all features of SmartSDR for Windows such as: ■ Supports FT8 and FT4 (iPad and iPhone Max, Firmware 2 required) ■ SSTV TX and RX (NEW!) ■ APRS TX and RX (NEW!) ■ Included CW Decoder and keyer ■ Weather Fax (HF-Fax) Decoder ■ 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 ■ APD / SmartSignal™ support ■ MultiFlex™ support ■ SmartControl support ■ HomeKit support to control radio, antenna switches etc. remotely ■ Direct support for Power Genius XL (PGXL), Tuner Genius (TGXL), Antenna Genius (AGXL) and Rotator Genius (RGXL) local and remote 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 ■ DX Cluster support which displays spots directly inside the Pan adapter ■ 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 ■ Support for two Bluetooth and USB Controllers ■ 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. WHAT YOU NEED: - A FlexRadio Systems® FLEX-6000, 8000 or Aurora series radio - An iPhone or iPad that runs at least iOS 17, ideally the latest iOS version NETWORK REQUIREMENTS: To run this App at your home, nothing else but a regular WiFi connection is needed that can access your FLEX Radio. 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. SUPPORTED SDR HARDWARE: FLEX-6300, FLEX-6400, FLEX-6400M, FLEX-6500, FLEX-6600, FLEX-6600M, FLEX-6700,FLEX-8400, FLEX-8400M, FLEX-8600, FLEX-8600M, AU-510, AU-510M, AU-520, AU-520M Find out more here: https://ham-radio-apps.com Read the Manual: https://go-to.me/smartsdr-manual ## Key features - FT8 and FT4 support - SSTV TX and RX - APRS TX and RX - CW Decoder and keyer - Weather Fax decoder - Slice and Panadapter management - SmartLink remote access ## Pricing and in-app purchases Base price: $79.99. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | FlexRadio Device access | $64.99 | one-time | | Region 1,2 and 3 Band Plan | Free | one-time | | DX-Cluster | $5.99 | one-time | | Griffin PowerMate BT Controller support | $5.99 | one-time | | MidiController support | $5.99 | one-time | | Logbook Add-on | $5.99 | one-time | | Flic 2 Button support | $5.99 | one-time | | Voice Macros | $5.99 | one-time | | FT8 | $19.99 | one-time | | 4O3A Genius Device support | $9.99 | one-time | ## Chart rankings - #198 in Top Paid · Utilities (US App Store) ## Recent user reviews (10 of 85) All indexed reviews: https://appshunter.io/ios/app/smartsdr-flexradio-systems/id1089157289/reviews.md ### 5/5 — Tolle App *2026-02-27* Wirklich schöne App - funktional und wird immer wieder optimiert und weiter entwickelt - dieser Punkt ist für mich besonders wichtig - würde die App definitiv wieder erwerben - ganz klar geschenkt ist die App nicht - aber ihr Preis ist sie Wert ### 5/5 — Fantastic software *2026-01-29, version 7.0.103* I have a large flex system two radios 860 6600 with tuner genius, antenna, genius and power genius I was really struggling running this on windows with flex software kept having slice master other third-party apps and windows. Every other day updating the software kept crashing system. I was spending hours of my day trying to keep windows working. I packed it all in scrapped windows went and bought a new Mac and I used Marcus‘s SDR software to do everything it is fantastic now I play radio with built-in FT8 whisper and logging programs also DXlogger is a fantastic logging program as well and an optional JS8 CALL software everything works radio always hooks up my Flex radio‘s be work better than ever. I was ready to sell all my radios and throw rocks at them . Marcus software save me the radios work fantastic now I have no problems. Flex radio’s are fantastic. Just don’t use Windows and flex software. This is your ticket. Buy his suite of software and it works fabulous. I also have his Icom control software it works beautiful with a 705 and a 9700 works fantastic. This is a software for you if you want it simple and just to work. Can’t go wrong with this software and running flex on an apple is the way to go. ### 5/5 — Awesome App *2025-12-26, version 7.0.94* I find myself listening through the app more than on my Flex Radio. ### 5/5 — Truly radio anywhere! *2025-12-11* To be able to open the app and access all the best of the Flex system anywhere is a blast! The app keeps getting better. To have a few minutes, open the app, and bag some DX or POTA is just too cool! ### 5/5 — SmartSDR *2025-12-10* Excellent App ‘6’ Stars. I recently had a problem with my logbook and Marcus couldn’t have been more helpful in resolving the issue. He went above and beyond my expectation in doing this. Thank you Marcus. ### 5/5 — Perfect *2025-09-03* Just got back on the radio after 2 years QRT and delighted to find the app is working better than ever on IOS and on my MacBook. Easy to use and supports CW decode, HF Fax, PSK, SSTV and FT8/4. The Mac version also has RTTY. Useful tools include band plan, call lookup, PSK reporter and logbook amongst other things. I see Marcus now also has an SDR app for the IC705 (and other Icom radios) so I’m tempted to buy one of them for /P operating. **Developer response:** There would have been a solution if you would have contacted me. So this response is for users with similar challenges: Please contact me so I can help. vy 73, Marcus, DL8MRE ### 5/5 — Hamshack In The Garden. *2025-05-28* Best way to operate a FlexRadio is using this app sitting in the garden. The implementation is superb and includes many features not in the windows version. Naturally some things are easier in the shack with dual 4k monitors; but within that limit every function is doable. Also app support is great. Detailed and rapid. My experience is with iPad Pro 12.9 6th gen, Flex 6400, TGXL, and PGXL. I have used an iPhone 15 and it works remarkably well but I REALLY recommend the big iPad if you can. W0MPM ### 5/5 — A brillant piece of software! *2024-11-17* SmartSDR is a must for all FlexRadio users. It gives incredible perspectives and usability of the radio. SmartSDR is intelligent, very complete, easy to use and very stable. The latest version is even more so. What a joy! I use both versions, iPhone and Mac, and I can say the same thing about each of them. ### 5/5 — Incredible app *2024-11-16* Quite impressive with everything that’s been built in to this one app. The fact you can do CW, FT8, and more right in the app is a huge accomplishment. I literally just tried FT8 for the first time from my iPhone while laying in bed. Would love (and would pay) for the ability to do Winlink from the app somehow. If not that, at least a mode like JS8, RTYY, etc where you could do some messaging. Hats off to the developers! ### 5/5 — Ohne Fehler *2024-10-23* Ich benutze die App schon seit zwei Jahren. Bis jetzt immer fehlerfrei und mit automatischen Updates. Ich bin einfach begeistert. ## Frequently asked questions about SmartSDR™ ### What does SmartSDR do? SmartSDR is an official client application that allows you to operate your FlexRadio Systems® Software Defined Radio (SDR) device directly from your iPad or iPhone. It provides access to most of the features found in the desktop version, enabling you to tune, decode, and transmit various radio signals. ### What are the key features of SmartSDR? Key features include support for digital modes like FT8 and FT4, SSTV and APRS transmission/reception, an integrated CW decoder and keyer, Weather Fax decoding, comprehensive management of radio slices and panadapters, and remote access capabilities via SmartLink. It also offers advanced audio and TX settings. ### Is SmartSDR free to use? Yes, the SmartSDR application itself is free to download and use. It does not contain in-app purchases or advertisements. However, you will need to own a compatible FlexRadio Systems® SDR device to operate the app. ### What hardware and software is required to use SmartSDR? To use SmartSDR, you need a FlexRadio Systems® FLEX-6000 or 8000 series radio and an iPhone or iPad running at least iOS 17. For remote operation via SmartLink, a Version 2 License for your radio is also required. ### Can I use SmartSDR for remote operation? Yes, SmartSDR supports remote operation through FlexRadio's SmartLink™ technology. This allows you to control your FlexRadio device from anywhere with an internet connection, provided you have the necessary radio license and network setup. ## Version history (last 5 releases) ### 7.0.131 — 2026-07-11 This update contains the following changes and improvements: ◉ Added support for the HaliKey MIDI Keyer USB Controller ◉ Added an additional Azimuth Offset Setting the for Metropwr RT1 Rotator Controller ◉ A warning will now be displayed when the Low Data Mode is enabled ◉ An issue in the POTA Tool when showing a map was fixed ◉ Added Frequencies for 2200m, 630m and 23cm to the WSPR Tool ◉ Improved logbook iCloud handling in case of poor internet access ◉ Logbook export will now also export even wrong or incomplete QSOs ◉ Implemented some additional improvements and optimizations behind the scenes Kindly use the ‘CONTACT SUPPORT’ feature under Settings of the app in case of questions or issues. I will ensure your request is promptly answered or resolved. Your continued support and valuable feedback play a crucial role in further improving this app. 73s, Marcus, DL8MRE ### 7.0.130 — 2026-06-16 This update contains the following changes and improvements: ◉ Implemented some improvements and optimizations behind the scenes Kindly use the ‘CONTACT SUPPORT’ feature under Settings of the app in case of questions or issues. I will ensure your request is promptly answered or resolved. Your continued support and valuable feedback play a crucial role in further improving this app. 73s, Marcus, DL8MRE ### 7.0.127 — 2026-05-12 This update contains the following changes and improvements: ◉ New setting "Show TX Filter" ◉ New setting "Profile Auto Save" (on by default) ◉ When "Profile Auto Save" is disabled, re-selecting the same profile restores its settings (works for all profile types) ◉ Further Pryme / Zello Button alternatives are now supported (see the app Manual for details) ◉ Tune Stack: clicking Clear now preserves favorite entries; double-click (or double-tap) Clear to remove all entries ◉ Implemented some additional improvements and optimizations behind the scenes Kindly use the ‘CONTACT SUPPORT’ feature under Settings of the app in case of questions or issues. I will ensure your request is promptly answered or resolved. Your continued support and valuable feedback play a crucial role in further improving this app. 73s, Marcus, DL8MRE ### 7.0.126 — 2026-05-12 This update contains the following changes and improvements: ◉ New setting "Show TX Filter" ◉ New setting "Profile Auto Save" (off by default) ◉ When "Profile Auto Save" is disabled, re-selecting the same profile restores its settings (works for all profile types) ◉ Further Pryme / Zello Button alternatives are now supported (see the app Manual for details) ◉ Tune Stack: clicking Clear now preserves favorite entries; double-click (or double-tap) Clear to remove all entries ◉ Implemented some additional improvements and optimizations behind the scenes Kindly use the ‘CONTACT SUPPORT’ feature under Settings of the app in case of questions or issues. I will ensure your request is promptly answered or resolved. Your continued support and valuable feedback play a crucial role in further improving this app. 73s, Marcus, DL8MRE ### 7.0.124 — 2026-04-26 This update contains the following changes and improvements: ◉ Fixed an issue where the connection dropped after a few minutes when using StarLink or CGNAT ◉ Some FT8 improvements ◉ Some WSPR improvements ◉ Implemented some additional improvements and optimizations behind the scenes Kindly use the ‘CONTACT SUPPORT’ feature under Settings of the app in case of questions or issues. I will ensure your request is promptly answered or resolved. Your continued support and valuable feedback play a crucial role in further improving this app. 73s, Marcus, DL8MRE ## Apps similar to SmartSDR™ | App | Rating | Price | Category | | --- | --- | --- | --- | | [益电宝-数据改变未来](https://appshunter.io/ios/app/id1434796500) | — | Free | Utilities | | [HeatNext](https://appshunter.io/ios/app/heatnext/id1440372440) | — | Free | Utilities | | [GHIA KIDS](https://appshunter.io/ios/app/ghia-kids/id1434789680) | — | Free | Utilities | | [Omni Relprev](https://appshunter.io/ios/app/omni-relprev/id1434690340) | — | Free | Utilities | | [MISD Tip](https://appshunter.io/ios/app/misd-tip/id1440174120) | — | Free | Utilities | | [佐敦](https://appshunter.io/ios/app/id1448255140) | — | Free | Utilities | ## More apps by Marcus Roskosch - [iCluster - DX-Cluster database](https://appshunter.io/ios/app/icluster-dx-cluster-database/id334053435) - [Electronic Toolbox Pro](https://appshunter.io/ios/app/electronic-toolbox-pro/id339158729) - [RF-Toolbox Pro](https://appshunter.io/ios/app/rf-toolbox-pro/id593044099) - [SamacSys](https://appshunter.io/ios/app/samacsys/id1454509750) - [SDR-Control for Icom](https://appshunter.io/ios/app/sdr-control-for-icom/id1614141094) All apps by Marcus Roskosch: https://appshunter.io/developer/334053438 ## Related topics [sdr receiver](https://appshunter.io/ios/topics/sdr-receiver) · [sdr](https://appshunter.io/ios/topics/sdr) · [sdr radio](https://appshunter.io/ios/topics/sdr-radio) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-23.*