Works (kind of) with KiwiSDR
I have been running a public KiwiSDR receiver for years and always wanted an IOS client for it. Although very limited (see below) this app is an answer to that. The app will connect to KiwiSDR receivers and open a raw IQ stream. It will then proceed to demodulate the received stream within the app itself (AM,FM,SSB,CW are available). This is drastically different from how a KiwiSDR receiver normally works, the biggest difference being that you will only be able to see about 10KHz of spectrum bandwidth instead of 30MHz. The user interface is very, very basic and at times hard to use. Overall, however, this is the only IOS client I know of that works with my KiwiSDR and therefore I will keep using it. Note: I also tried the app with an RTL-SDR dongle but I was unable to do it successfully due to an error about Soapy that shoes in the logs.