There are even more currencies

Yes, there are more currencies. Mentioned briefly above, Shop Tickets are obtained by completing different missions or battles, and can be redeemed to buy item cards, different cosmetics, or hourglasses. These are probably the most versatile currency in the game, so they should be used on whatever you prefer. There are also Emblem Tickets which are awarded by completing Dex milestones, such as registering a set number of cards, and can be used to buy Emblems from the Store. Emblems are just badges you can apply to your profile, and don’t really have any impact on the game. Right now, the options are Pikachu, Charizard and Mewtwo, so if you have enough, just use it on whatever monster is your favorite of those. There are also Special Shop Tickets which can be gathered by spending regular Shop tickets, or consuming high-rarity cards. These let you purchase Special Series cosmetics such as coins and playmats, though they aren’t too exciting.

For a game about collecting cards, Pokémon TCG Pocket complicates this simple hobby by including an obscene amount of currencies and cosmetics that may leave you with a headache even Psyduck could’t handle. While it is a lot to take in at first, most of these currencies can only be used on a specific aspect of the game—such as hourglasses—so you don’t need to worry about spending it on the “wrong” thing. Just play the game however you want, and good luck collecting ‘em all.