Thanks! Honestly still figuring this out myself.
What's worked so far: HN posts (like this one), App Store search/optimization, and surprisingly – just parents telling other parents. I get emails from people who found Muky through friends. Slow but it sticks.
Reddit I haven't cracked yet. Parenting subs can be weird about self-promo. What subs are working for you?
Your app looks good, too!