Credits remove the CasaVivid watermark: 1 credit per photo, once. Downloading with the watermark is free. See Credits and pricing for what counts as a photo.
Your balance
Your credit balance is shown in the sidebar. Click it to open Credit history, which lists every purchase and every watermark removed, with the credits used and your balance after each one. New accounts start with no credits and 50 free generations to try everything.
Credit packs
Credits come in one-time packs, with no subscription. Buying a pack also lets you keep creating once your free generations run out. Credits you buy last 12 months. See the pricing page for current prices and Refunds and credit terms for refunds.
Running out mid-download
If removing watermarks needs more credits than you have, the download window tells you how many more you need and shows a Buy credits button. Buy credits, then download again, or download with the watermark for free. Nothing is charged until the watermark is removed.