free. According to official website, a small program for inquiring about Card God Day, the date of Card God Calendar is clear and free. Card God Calendar is a WeChat applet, which can be searched and used directly through the applet without installation. The function of the card calendar is much simpler, focusing only on bill reminder. Is a professional credit card management applet, all the information is filled in by yourself, and no email or short messages are read to prevent privacy leakage. All the information is in your own hands, and the card calendar will neither intercept data nor reveal privacy, because these data are useless to others except yourself. Card calendar manages credit cards in the form of calendars, which is clear at a glance. It can not only manage credit cards well, but also achieve optimal configuration and achieve the best income.