Free features to get the user to get used to the game and figure it out, and paid features that are unlocked. App pricing is somewhat tricky, since most people

Free features to get the user to get used to the game and figure it out, and paid features that are unlocked. App pricing is somewhat tricky, since most people hesitate to even pay $0.99. I personally wouldn’t just buy something without knowing if I’d like it or not. Descriptions and reviews may not always help in knowing that. Actually playing it certainly would. Also consider keeping some exciting or challenging parts in the free set so that users can know what more to expect if they pay.