Dance with your ideas
Life situations that create a flow state produce quality work. The activities, environment, frame of mind, and mental thought processes are flow state inducing. Apps and analog tools can reduce the fraction of inertia but are not sufficient in themselves to dropping you into a flow state where dancing with knowledge commences. Finding and focusing on the internal mental moves necessary to dance with ideas is more valuable. Focusing the mental effort on learning these steps to swing with ideas will set you apart from the masses.
It doesn't matter what style of dance you do, be it two-step, ballet, polka, rumba, tango, samba, or freestyle. All you need is a floor to shuffle on, a willing partner (maybe your zettelkasten), and some rhythms, either music in your ear or music in your head. Don't be a wallflower. Get up and dance. You'll look clumsy at first. Your partners won't match your ideals. This stage is where lowering your standards of what constitutes an engaging waltz with your ideas allows progression - learning - knowledge growth. Eventually, if you keep being available for dance, your ideals of dancing with ideas will catch up with your skills. But this is a stage everyone goes through.