On the way into the world of gui's

ccgt-0.3.tar.xz
The functionality is pretty basic, but the tuning algorithm is very good and accurate in my opinion. Definitely usable

You should set your default audio source to the appropriate value, otherwise the tuner won't work.
Thanks so much DeBukkIt for all the good instructions ... I really should buy you a cup of coffee!
https://www.youtube.com/user/DeBukkIt