Only some prepaid or secured cards buildredit. You have to be sure they "REPORT" to the credit bureaus. Thats the key to building credit. Opening and maintaining different types of credit, keeping low balances and paying on time. If the card reports to the bureaus, it will build your credit scores. Remember there are 3 different credit agencies: Experian, Equifax and TransUnion and NOT ALL CREDITORS REPORT TO ALL 3 BUREAUS. You must ask the creditor who they report to and that is the answer to your question... Good luck with those cards, I prefer loaded value cards.
Corey Gray, Credit Analyst & Founder Credit Assistance Network Inc.