SDR++
SDR++ is a cross-platform software-defined radio receiver app for tuning, monitoring, and exploring radio signals with supported SDR hardware.
What is SDR++?
SDR++ is a software-defined radio receiver application that helps users tune, view, and monitor radio signals with compatible SDR devices on macOS and other desktop platforms. It is designed for radio hobbyists, experimenters, and anyone learning about spectrum monitoring, broadcast reception, or signal exploration. The app provides a real-time spectrum and waterfall display so users can browse activity across a range of frequencies and tune signals visually. It also supports multiple hardware back ends, making it useful with a variety of common SDR receivers. SDR++ includes a modular design with plugin support, which helps users extend workflows for different devices and listening tasks. For Mac users, it fits naturally into desktop SDR workflows for receiving radio traffic, testing antennas, and exploring RF environments.
Key features
- Tune and monitor radio signals with compatible SDR hardware
- Browse frequencies with a real-time spectrum and waterfall display
- Use multiple VFOs for flexible tuning and signal monitoring
- Work with a range of supported SDR devices and hardware modules
- Extend functionality with plugins and modular components
- Run on macOS as part of a cross-platform SDR workflow
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Safety overview
Status: Safe
SDR++ is legitimate radio receiver software. It may need access to connected USB SDR hardware and can store its own settings and module configuration, which is normal for this type of app. Use builds from the official website, keep any added plugins or modules from sources you trust, and expect the app to stop working for SDR tasks if you remove its related support files.
Recommendation: Keep SDR++ if you use software-defined radio hardware or plan to explore and monitor radio signals on your Mac. If you no longer use SDR equipment, you can remove the app and its related support files without affecting macOS beyond losing your saved SDR++ setup.
Common paths
/Applications/SDR++.app
Support paths
~/Library/Application Support/sdrpp
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