Signing up takes one form, and no payment details are required at any point in it. Go to app.universally.com/register, or choose Sign up from the login page.

Four fields:
- Email address, which is also how you log in
- First name and Last name
- Password, at least 8 characters including 1 number
Then choose Create Account.
What comes next
Two screens before you reach your first project, and neither one charges you.
Choose your plan. Signing up takes you to a plan screen with a monthly and yearly toggle, running from Free upwards. Free is a real option here, not a trial: pick it and carry on.
Add a card, or skip it. Whichever plan you chose, the next screen asks for a card. On Free it is offered so that translation can continue if you run out of words rather than stopping. You do not have to give one: Skip and Connect goes on without it, and the dialog that asks whether you are sure is a confirmation, not a wall. Nothing is charged at signup either way. See Usage limits for what a card on file changes.
Create your project. An account on its own translates nothing: a project is what holds a site, its languages and its translations. See Your first translation for the walkthrough, and Projects, workspaces and sites for how the pieces fit together.