What purchases can I make in the game?

You can make purchases in the in-game shop. In order to access the shop press the plus sign on the coin icon at the top part of the screen.
You can purchase the following items there:
1) Coins. You can buy apples for pets and restore lifes for coins.
2) Special packs that include coins, boosters and apples for pets. Boosters help you with match-3 level completion and apples restore pets energy immediately.