Spectrum is a room frequency response app designed to be easy to use while packing the features that are useful for audio and HiFi enthusiasts. While it isn’t going to replace an ECM8000, it is at least portable, free and can double as a sound meter.

Privacy Policy

This app is 100% free and open source. The app does not connect to the internet as it is designed to be 100% offline. There are no location services or third-party requests being made. This may change in the future with a UI and feature overhaul.