Ui looks nice mate! I’d consider myself an eternally intermediate guitar player. Hit a level of competence and haven’t had the time/drive to move past it.
Slightly unrelated, but I’ve always found the current ear training apps to not really translate to helping me pick out songs by ear.
I’ve always wanted an app that focuses more on learning songs by ear, finding the root not and chords/melodies, vs just isolated interval recognition. I’d love to improve at this while on the train which an app would be great for.
I’ve tried: Functional Ear, Earpeggio, and Perfect Ear. Functional ear is my favorite but I find it isn’t translating into my jam sessions.
Either way, my bigger point is: connect "ear training" to your practice on the instrument, and don't neglect the speaking portion of learning the language in favor of the hearing.