No credit card required
Browse credit cards from a variety of issuers to see if there's a better card for you.
Ok. So, this may sound like a dumb question, but ... when you say a secured account, do you mean like where they give me a credit card that is secured? Or a personal loan for a given amount?
It's a personal loan using money in your savings account as collateral. FICO gives a score boost just for having an open installment loan of any kind. Alliant Credit Union used to be the lender of choice for this but stopped offering the product about a year ago. Navy Federal seems to be the best alternative. The key to what made them great is the ability to pay 91% of loan right away and push the date of next payment years down the road. The FICO score boost is the greatest with a loan balance under 9%.
Opening a shared secured loan elsewhere may have some scoring benefit but most institutions only let you pay ~3 months ahead before shortening the term of the loan. Which makes the <9% technique relatively short lived.