The Cash Back World Master is a personal credit card from Cash Back World Master. The annual fee is null. The ongoing APR is 18.24%-28.24% after a 0% introductory rate for 12 months. Rewards: Unlimited Cash Back 4 3% on Groceries 2% on Gas, Restaurants, & Streaming Services 1.5% on everything else. Cash back: $100 for spending $1000 in the first 90 days.