Prepaid Cards vs Credit Cards
What a prepaid card is
A prepaid card is loaded with your own money and you spend down the balance, like a reloadable gift card. There is no credit check, no borrowing, and no bill, but also no credit line. Because no lending happens, prepaid cards do not report to the credit bureaus and cannot build your credit history.
Prepaid vs secured vs credit
People often confuse prepaid and secured cards. A secured card also takes an upfront deposit, but it is a real credit card that reports to the bureaus and builds credit, then often refunds the deposit and graduates to unsecured. A prepaid card does none of that. A regular credit card is an unsecured line of credit that builds credit and can earn rewards. See debit vs credit for the spend-your-own-money comparison.
Who should use which
A prepaid card suits budgeting, gifting, or avoiding credit entirely, but it is a dead end for credit-building and rarely earns rewards. If you want to build credit, choose a secured card instead. If you have credit and pay in full, a rewards card is the clear winner.