DigiDecoder: Ham Radio

FT8 SSTV CW Packet JS8 Decoder

Free · In‑App Purchases

Automatically identify, decode and encode amateur radio digital modes. Supports SSTV, Packet, RTTY, CW, FT8, FT4, JS8 and Olivia with real-time waterfall display. 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. Experience DigiDecoder with a free 7-day trial. Currently supported decode 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 Currently supported encode modes (more to come): SSTV: Robot 12 BW - 160×120 Robot 36 - 320×240 YCrCb Scottie S1 - 320×256 RGB Scottie S2 - 320×256 RGB Martin M1 - 320×256 RGB Martin M2 - 320×256 RGB PD120 - 640×496 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 Narrowband: RTTY - 45.45/50/75 Bd CW/Morse - 5-55 WPM Weak Signal: FT8 - 8-tone GFSK, 15s periods FT4 - 4-tone GFSK, 7.5s periods Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

  • This app’s overall rating was recently reset.

- accessibility improvements - Italian translation

The developer, Lukasz Skierkowski, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Usage Data
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

The developer indicated that this app supports the following accessibility features. Learn More

  • Supported Features

    • Dark Interface

Seller
  • Lukasz Skierkowski
Size
  • 11.2 MB
Category
  • Utilities
Compatibility
Requires iOS 17.0 or later.
  • iPhone
    Requires iOS 17.0 or later.
  • iPad
    Requires iPadOS 17.0 or later.
  • Mac
    Requires macOS 14.0 or later.
Languages
English and 5 more
  • English, French, German, Italian, Polish, Spanish
Age Rating
4+
In-App Purchases
Yes
  • DigiDecoder Monthly $2.99
  • DigiDecoder Lifetime $8.99
Copyright
  • © 2026 Lukasz Skierkowski