Max Cash Preferred Card — Sturdy Savings Bank is a personal credit card from Sturdy Savings Bank. The annual fee is None. The ongoing APR is APR for Purchases 0% introductory APR for the first 12 billing cycles. After that, 17.99% to 28.24% based on your creditworthiness when you open your account.. Rewards: Get more value with up to 5% cash back in 2 categories you choose 5 5% cash back In two categories of your choice – first $2,000 in combined purchases each quarter 5 $150 bonus Awarded when you spend $500 within the first 90 days.