Flagcounter are basically used to see from which countries your visitors are coming from. You can use hit counter to view that how many people view your website and at which website. There are so many good website who are providing free hit counter services for example sitecounters.info. This is the best website on the internet who are not only providing free counter they are also providing free flag counter as well.
If any user from any country visits your website their information has been recorded in the database and then it is calculated that how many people visited your website. These counters can be called as visitor tracker. Many people do not want to keep record their visitors but it important to keep the track of your website visitor with the help of flag counter.