Rachel G. Fox said, “I never carry a purse. My iPhone is always with me, a credit card, and a piece of mint chocolate chip cookie dough ice cream gum.” Nowadays we have to accept that credit card makes our life easier to use instead of seeing how much the money we have left in the wallet. Many people are more convenient in using the credit card because they can control their money in bank account. They can see the movement of money in each time when they use it; however, there are many people still use cash because they think it is the stable and efficient way of life. Even though the credit card and cash almost the same, there are similarities and difference between them. Both of them make us more convenience to buy a lot of things that they want, and they can have control of their money.