Install gxtuner by entering the following commands in the terminal:
sudo apt update sudo apt install gxtuner
Description:
Tuner for Jack
A simple, small and lightweight guitar/bass tuner for jack. Gxtuner comes with a analogue like interface (scale), show the tune (char) and the accumulated frequency (Hz). . It's a break out of the guitarix tuner module.
Homepage: https://guitarix.sourceforge.io
Version: 3.0-1
Section: universe/sound