One a day makes it hard to get better. Why not let us just keep doing them one after the other? E.g. the fretboard game currently on the front page (I prefer the neverending practice mode): https://news.ycombinator.com/item?id=38407780
We originally wanted to stick to the daily simplicity of wordle, but a "practice mode" is on our roadmap! (I agree, more practice would help people improve their auditory skills faster.)