I made the SpaceGuitune guitar tuner a while ago, and Elsa said that I should have made a Tuner Fish instead. She just got a banjo a while ago, and thus the Banjo Tuner-Fish was born. I think maybe the order of the notes might be a bit wonky, but I hope it's okay. You can either use this online or download it as a small executable file that you can just put on your desktop:

DOWNLOAD FOR WINDOWS (ZIP file, 1.3mb)