# Demod: SDR Receiver — Shortwave, HF & ham radio > iPhone software-defined radio receiver client for SDR servers. (iPhone/iPad app by Alphonse Romero.) - Source: https://appshunter.io/ios/app/demod-sdr-receiver/id6782193839 (this page in markdown: same URL + `.md`) - Developer: [Alphonse Romero](https://appshunter.io/developer/6782193841) - Category: Utilities, Entertainment - Price: $9.99 - Rating: 5.00/5 from 2 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 17.0 · 5 MB - Languages: American English - Released: 2026-06-24 - Data updated: 2026-08-18 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/demod-sdr-receiver/id6782193839/reviews.md ## What is Demod? Demod turns your iPhone and iPad into a world-class shortwave radio — tuning live software-defined receivers around the globe. Connect to public SpyServer and rtl_tcp servers over Wi-Fi or cellular and listen in real time: shortwave broadcasters, ham radio, aircraft, marine, time signals, and more. No antenna or extra hardware required. FEATURES • Connect to SpyServer, rtl_tcp, and KiwiSDR receivers • Smooth, Metal-powered waterfall and spectrum display • AM, FM, USB, LSB, and CW with adjustable bandwidth • Built-in decoders: CW (Morse), RTTY, PSK31, and FT8 • Fast, tactile tuning with a large frequency dial • Save your favorite stations and frequencies • Noise blanker and hum notch for cleaner audio • AirPlay to HomePod, speakers, or headphones • Native on both iPhone and iPad Whether you're a licensed ham, a shortwave listener, or just curious what's drifting around the radio spectrum, Demod puts a real SDR in your pocket. ## Key features - Real-time waterfall and spectrum display - AM, NFM, WFM, USB, LSB, and CW demodulation - Adjustable bandwidth, gain, and squelch - Save and recall favorite frequencies - Browse public SDR servers worldwide - AirPlay output and Lock Screen controls ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/demod-sdr-receiver/id6782193839/reviews.md ### 5/5 — Great Radio *2026-07-20* Works as advertised ## Frequently asked questions about Demod ### What is Demod? Demod is a software-defined radio (SDR) receiver client for your iPhone or iPad. It allows you to connect to SDR servers to listen to various radio frequencies without needing any hardware connected to your device. ### Does Demod require an SDR server? Yes, Demod is a client application and requires an SDR server to function. You can either set up your own server on a Raspberry Pi, PC, or Mac, or connect to one of the many free public servers available worldwide. ### What radio frequencies can I listen to with Demod? Demod supports a wide range of frequencies, including shortwave broadcasts, ham radio, aircraft, marine, and FM radio. It offers various demodulation modes like AM, NFM, WFM, USB, LSB, and CW. ### How much does Demod cost? Demod is a paid application priced at $9.99. This one-time purchase grants you access to all its features and capabilities. ### Does Demod have ads? No, Demod does not contain advertisements. The developer explicitly states that the app collects no data, has no accounts, no tracking, and no ads. ### What devices is Demod compatible with? Demod is compatible with iPhones and iPads. It is rated for ages 4 and up. ### How often is Demod updated? Demod was last updated on July 2, 2026, with version 1.2. This indicates a relatively active development cycle for the application. ### Can I save my favorite frequencies in Demod? Yes, Demod allows you to save and recall favorite frequencies. You can also import and export these frequencies as CSV files for easy management. ## Version history (last 5 releases) ### 1.3 — 2026-08-05 • KiwiSDR support — connect to KiwiSDR HF web receivers, with live audio and waterfall streamed straight from the server. Great for shortwave and the ham HF bands when you don't have your own antenna up. • Browse public receivers worldwide — now on a station map as well as a list • Time-Shift — pause and rewind live radio (about 3 minutes of DVR buffer) • Record what you hear, with a pre-roll of the moment you tapped Record • Live Text — on-device transcription of the audio, with on-device translation of the captions (iOS 18+) and a full-screen transcript reader • Identify — tap the new button on the waterfall to ask "what is this signal?" • Scanner — scan memories, a band range, or let Smart scan find active signals • Noise reduction (spectral DNR), noise blanker, and mains-hum notch • Decoders (beta) for CW, RTTY, PSK31, and FT8 — FT8 uses a much more sensitive decoder that pulls far more signals out of a busy band • Redesigned controls: five focused tabs instead of one long list • Audio now resumes automatically after phone calls and Siri • Many robustness and stability fixes throughout ### 1.2.2 — 2026-07-14 Smoother SpyServer audio and better handling of slow servers: • Attempted fix for the audio drop-outs ("chuffing") some SpyServer connections had. • SpyServer now has a selectable sample rate and defaults to a lighter setting that streams cleanly on more connections. • If a server can't keep up in real time, Demod now tells you (and suggests switching to 8-bit, a lower rate, or another server) instead of just breaking up. • Stability improvements. ### 1.2.1 — 2026-07-12 • Fixed an audio dropout ("chuffing") some listeners heard on SpyServer connections — audio now plays smoothly. • Improved stability and crash-resistance when connecting to servers. • Added a confirmation prompt before opening a shared connection link. ### 1.2 — 2026-07-02 Demod 1.2 — digital decoders, noise reduction, and favorites Decode digital modes • CW (Morse), RTTY, and PSK31 decode to live text right under the waterfall • FT8 — decodes a full 15-second slot at a time and lists every message with its SNR and frequency • Tap an FT8 message to copy a callsign; long-press the CW/RTTY/PSK strip to copy its text Clean up the noise • Noise blanker knocks down impulsive electrical/RFI crackle • 60/120 Hz hum notch removes power-line buzz. Both toggle on under Signal Correction. Favorite stations • Save any receiver — a public server or your own — together with its frequency and mode • Reconnect and tune with one tap; rename and reorder your list Also in this update • Mute button that remembers your volume level • Haptic feedback while tuning • SpyServer gain now shows the correct gain steps • Upconverter settings no longer apply to remote servers by mistake • The public-server browser remembers your sort order ### 1.1 — 2026-06-27 • Share connections: send a link with the server, frequency, mode, bandwidth and gain — tap it to open Demod and tune right to it. • Public server browser: sort by availability, fewest users, ping, or name; live latency for each server. • Faster, clearer connections: dead or busy servers now fail quickly instead of hanging. ## More apps by Alphonse Romero - [Ondari — A Living World](https://appshunter.io/ios/app/ondari-a-living-world/id6790043890) All apps by Alphonse Romero: https://appshunter.io/developer/6782193841 ## Related topics [sdr receiver](https://appshunter.io/ios/topics/sdr-receiver) --- *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 2026-08-18.*