Yes. Plans are monthly and you can switch or cancel from Settings at any time. Your photos stay where they are.
What happens if I run out of storage?
New uploads are refused until you free up space or move to a larger plan. You are told on your dashboard and by email the moment it happens, so nothing goes missing quietly.
Do I need a company to subscribe?
No. Pro and Studio are for individuals; checkout asks for a card and nothing more.
Is there a free tier?
Yes, with 5 GB and three albums, no card required. Most photographers start there and upgrade during their first paid event.