(Guitar+Bass) I would prefer to have more content on the screen to see more of the song at once instead of enlarging the letters. Font size is ok, but there is too much empty space between. :-) Please condense!
Larger letters might be helpful for people using their TV with a distance of some meters, but I am sitting right in front of a 27" computer display. :-)
All the best!

90% of my screen is black. It’s ridiculous how small the fonts and notes are. The lyrics are huge but after a few tries you know the lyrics. What you really need to see are the notes and where you are in comparison to them. Maybe even have the five lies of the music staff equally spaced too to bottom accross the screen with the notes and my dot. And have the words semi transparen across the top or bottom. Let’s face it if we are trying to learn a song it is probably a song we already know the words to we are trying to learn how to sing it.

Agreed this Simple fix for practice Mode: BOLD WHITE FRET NUMBERs

I have trouble reading the fret numbers in tab when playing without leaning in really close to the phone. Can you make the fret numbers bigger?

You could make them smaller if you wanted to see further ahead in the song i.e. fit more on the screen. Or make them bigger if you struggling to see them

I hard see the font text. Can you make it ajustable from settings ?