SDR Receiver

Don’t buy, doesn’t work with spyserver at port 5555. 10eur for that garbage sounds like a scam.

This is a basic “radio” app for listening to AM, nb FM (like NOAA weather radio), and wb FM (FM broadcast). Does not do SSB. Minus one star for not supporting stereo FM. Hopefully in a future version!

deserves every star. thank you for developing this on iOS, there are no alternatives.

App is great for streaming any of my local stations and sports broadcasts while as close to home as doing yard work or driving on the other side of the nation! Simple server with an FM antenna plugged into a Raspberry Pi and this app allows me to save presents to tune those stations. Great simple interface and significantly cheaper than paying for MLB.tv/NBA League Pass/NFL+ or SiriusXM. Plus NO DELAY since it's right from the radio feed. Can't recommend enough!

Love this app. Super simple and stable. I would LOVE the addition of SSB modes (LSB and USB) so I could listen to what's happening on the HF ham bands. For now, it's perfect for monitoring my local FM repeaters and FM broadcast stations. I work in a concrete building that can't get any radio signal. Being able to connect to my Raspberry Pi at home that has a cheap RTL-SDR dongle plugged in to it, is a really nice thing to have. If you guys ever add a SSB and a waterfall, this will be the BEST SDR app for iOS no doubt. Keep being awesome devs! Thank you!

It’s only works on VHF air and for AM. FM modes work fine.

Update: Program is a come on regarding HF coverage. You’ll also need an up converter, which I bought and opened another can of operational worms. Still only one star. Original: You buy it then they tell you what it needs to work. $10.00!!!

Still punching around, but this refuses to recognize my sdrplay as claimed. And where is the waterfall as described?

Works great on first try with rtl_tcp hosted on OSX.

First and foremost (as a few left negative reviews as they didn’t know what this exactly did before purchasing), you need (at minimum) an SDR dongle running on a computer (Mac, PC, Raspberry Pi, etc) in order to use this application. This app is designed to receive a stream of data across a network (LAN or internet) from an SDR source. To stream from the internet (i.e, over LTE to back to your SDR source), you may need to forward a port on your router. The default port for SDR is just 1234. I have this and the other new one just released (one with waterfall). Both are working ok on iPhone and iPad, In fact this one may even be more stable than the waterfall one. For stability, I give it four stars marking that it’s “very good” and I like it, however there is room for more features. The presets are pretty useless if you don’t live in the California area that it looks like they are for. Restoring the presets is pretty useless as the majority of users will just delete them, use their own freqs, and never need to restore them. While adding a waterfall isn’t really necessary (in fact, it may degrade performance as it has to draw all that), adding LSB/USB modes is something I’d love to see added. Along with, perhaps, squelch. With LSB/USB, especially if they are stable using low freqs through upconverter, I would give this full 5 stars. I’m more interested in performance than eye candy. I’ve been using this app more often than the “waterfall” one. Sometimes less is more. However, for LSB/USB, I still have to turn to the other app...