Coins are Testpaper's reward currency. Earn them by actively using the platform, spend them to create custom AI-generated tests. The system rewards engagement, learning, and community contribution while staying inflation-safe and sustainable.

Creation costs (12 coins) are higher than attempt rewards (1–3 coins) to prevent infinite loops. Monthly coins provide a steady allowance so you can create tests regularly without depleting your permanent balance. Coin-based limits also help maintain quality and prevent spam.