Currencies are items in Agar.io that you can exchange for other items in the game. They are earned by doing actions in the game. They can be seen and used in both the browser and mobile versions of the game. There are two currencies in Agar.io, seen below.
coin shop
DNA In game
The DNA shop
Coins[]
Coins are the first currency added into the game. You can earn them by Potions, daily quests, reaching a new level, Gifts or Completing a Tapjoy Offer. They are used to buy Skins, boosts and a lot more.
Coin in game
DNA[]
DNA is the second currency. It is used to buy Premium Potions or to skip the brewing time of Mystery Potions. You can earn it by completing a quest or reaching a new level.