Unfortunately, the full version feels so much like a tech demo, that I can't say its worth the price, even at a mere 4 dollars. I've genuinely gotten more varied fun out of 99 cent games on the IOS appstore.
I understand how you feel. Unfortunately on itch there's no point of putting the price tag lower than 2$ because most of the money would go to payment processing fees. I am still working on the game though and planning to add couple of features to make it a little more worth of the price