The free to play framework of Super Kirby Clash seems to be exactly the same as the 3DS version, meaning it should be very much beatable without spending a dime. I'll be trying to do just that. However like Team Kirby Clash Deluxe, doing this likely requires being very efficient with your resources. As much as I'd love to buy those stickers, I expect the apple cost needed to unlock quest to become significantly greater than the amount of apples you earn for beating them. That's how it was in the orginal.