Fliff coins are used for unlocking exclusive content and features within the Fliff app. Users can purchase virtual goods, upgrades, and special perks using Fliff coins. These coins also enable users to access premium services and enhance their overall experience on the platform. Additionally, Fliff coins can be exchanged for rewards, discounts, and bonuses in various online activities. Overall, Fliff coins serve as a valuable digital currency that enhances user engagement and enjoyment on the Fliff platform.