Every credit purchase, test launch, and refund is recorded in your Transaction History on the Credits & Plans page.
Each transaction shows:
The description (e.g., "Launched test: Spindle Test #52 (quick_look)" or "Refund for cancelled test")
The amount — credits spent (shown in red as negative) or credits received (shown in green as positive)
The date of the transaction
This history gives you a full picture of how your credits have been used and makes it easy to track spending across multiple tests.