Amateur Digital vs DigiDecoder

Amateur Digital turns your iPhone or iPad into a full-featured digital mode station for amateur radio. Connect a USB audio interface between your device and your HF transceiver, and you're on the air. SUPPORTED MODES - RTTY (45.45, 50, 75 Baud) — Classic radio teletype using 5-bit Baudot code - PSK31 (31.25 Baud) — Narrowband phase-shift keying for keyboard-to-keyboard QSOs - BPSK63 (62.5 Baud) — Faster PSK for stronger signals - QPSK31 (31.25 Baud) — Four-phase PSK with 2x throughput - QPSK63 (62.5 Baud) — Fastest PSK variant for excellent conditions MULTI-CHANNEL DECODING Monitor multiple signals simultaneously across the audio passband. The app automatically detects and decodes transmissions on different frequencies, displaying each conversation in its own channel. IMESSAGE-STYLE INTERFACE A familiar chat interface makes digital modes approachable. Sent messages appear as blue bubbles, transmissions in progress are orange, and decoded signals appear as incoming messages. Swipe to reveal timestamps. AUTOMATIC GRID SQUARE Uses GPS to determine your Maidenhead grid locator automatically — perfect for portable and field operation. Enter your callsign once and it's ready for every QSO. BUILT-IN FREQUENCY REFERENCE Quick reference for digital mode calling frequencies on all HF bands from 160m through 6m, including WARC bands. ICLOUD SYNC Your callsign, grid locator, and mode settings sync across all your devices via iCloud. FREE AND OPEN SOURCE No ads, no in-app purchases, no subscriptions, no tracking. Amateur Digital is open source and built by a ham for hams. REQUIREMENTS - iPhone or iPad running iOS 17 or later - USB audio interface (Lightning or USB-C) - HF transceiver with SSB (USB) capability - Valid amateur radio license

DigiDecoder is a universal ham radio digital modes decoder and encoder. Use the built-in microphone or connect an audio cable directly for better input quality. One app for all the signals! The correct digital mode is automatically recognized and decoded in real time with an animated waterfall display. Quickly encode and send beautiful SSTV images, plus CW, FT8, and Packet messages. Bluetooth and network TNCs for Packet are supported as well. Try DigiDecoder free for 7 days. After the trial, continue with an affordable monthly subscription, or unlock lifetime access with a one-time purchase (a few months' worth). Nothing is charged during the trial and you can cancel anytime. Currently supported modes (more to come): SSTV: Robot 8 BW - 160×120 Robot 12 BW - 160×120 Robot 24 Color - 160×120 YCrCb Robot 24 BW - 320×240 Robot 36 - 320×240 YCrCb Robot 72 - 320×240 YCrCb Scottie S1 - 320×256 RGB Scottie S2 - 320×256 RGB Scottie DX - 320×256 RGB Martin M1 - 320×256 RGB Martin M2 - 320×256 RGB PD50 - 320×256 YCrCb PD90 - 320×256 YCrCb PD120 - 640×496 YCrCb PD180 - 640×496 YCrCb PD240 - 640×496 YCrCb PD160 - 512×400 YCrCb PD290 - 800×616 YCrCb Packet: AX.25 1200 - AFSK Bell 202, 1200/2200 Hz FX.25 1200 - AX.25 + Reed-Solomon FEC AX.25 300 - AFSK 1600/1800 Hz FX.25 300 - AX.25 300 + Reed-Solomon FEC IL2P 1200 AFSK - Bell 202 + RS FEC IL2P 300 AFSK - 1600/1800 Hz + RS FEC IL2P 300 BPSK - 1500 Hz DBPSK + RS FEC Weak Signal: FT8 - 8-tone GFSK, 15s periods FT4 - 4-tone GFSK, 7.5s periods JS8 - Keyboard-to-keyboard, FT8-based modulation Narrowband: RTTY - 45.45/50/75 Bd CW/Morse - 5-55 WPM Olivia - 8/250, 8/500, 16/500, 16/1000, 32/1000 Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/