The Modern Digital Mode Suite for Ham Radio
iDigi is a powerful and beautifully designed macOS application that brings the world of digital amateur radio to your desktop.
Whether you’re decoding slow-scan television (SSTV) images, experimenting with weak-signal propagation (WSPR), or receiving global weather fax broadcasts (WEFAX), iDigi provides a seamless, intuitive, and high-performance experience — all integrated into one elegant app.
One Application – Many Modes
iDigi supports a wide range of digital communication modes used by amateur radio operators worldwide:
- SSTV – Send and receive high-quality slow-scan television images with full VIS code support, automatic image alignment, and advanced slant correction.
- FT4 and FT8 – Weak-signal QSO in bad conditions
- WSPR – Explore weak-signal propagation reporting. Watch your transmissions appear on the world map and analyze propagation paths in real time.
- WEFAX – Decode and transmit weather fax images with professional-grade tools for slant, offset, and image corrections.
- And more: CW, RTTY, PSK31/63/125 – Experience reliable and efficient digital operation across HF bands with automatic CAT control and frequency presets.
Well Integrated
iDigi seamlessly integrates with a broad range of popular amateur-radio applications and online services, fitting naturally into existing station setups:
- Real-time spot display with GridTracker2
- Automatic QSO log transfer to MacLoggerDX, RUMLogNG, GridTracker2, or any N1MM-compatible logger running locally or on your LAN
- Automatic QSO uploads to LoTW, QRZ.com, eQSL, Clublog, and Wavelog
- Callsign and station lookups via QRZ.com and HamQTH
- Rig control via Hamlib, supporting virtually any CAT-capable transceiver over serial or network connections
Built for macOS
iDigi takes full advantage of the macOS ecosystem — from elegant UI design to system-level audio and hardware integration:
- Native Core Audio and Core Image processing for smooth decoding and image rendering.
- Efficient digital signal processing with Apple's Accelerate framework - fast and battery saving.
- Direct CAT control for most modern transceivers.
- Automatic frequency presets and band management.
- Optimized for both Intel and Apple Silicon Macs.
Powerful Visual Tools
Every mode in iDigi includes intuitive visual displays designed for clarity and precision:
- Waterfall View – Real-time frequency visualization with adjustable speed, width, contrast, smoothing, and color themes.
- Image Browser – Quickly browse received and transmitted images with filtering, sorting, and export capabilities.
- Interactive Map – Visualize propagation paths, received reports, and global WSPR activity in real time.
Get on the Air quickly with iDigi
Setup takes just a few minutes. Connect your transceiver, choose your preferred mode, and start decoding the airwaves.
From automatic VIS detection to LoTW integration — everything is designed to make digital radio operation on macOS effortless and fun.
Discover. Decode. Connect. – with iDigi.
iDigi is free to try on the Mac App Store, with a full license available as an in-app purchase for just $9.99 (prices may vary depending on country and applicable taxes).
