Clue - Period Tracker by Pocket Gems is a free application that allows users to track their period. This application is free but the developers have to pay for the selling of the application. In order to make sure that you are getting the right application to use and that it is not going to be malware, I suggest that you download this free app from the Android Market instead of just trying to download it from the Internet. The reason I say to download this application is that it is an application that you can use for free.
I understand that there are going to be some people who are upset about this free offering, but it is true. This is a legitimate application that is free. If you do get this free version, just download it and continue using it. There is no need to rush because it is a legitimate app and has been rated very high on the Google Play store. When you download the free version, you should know that there is no registration to do. This is a great feature if you are trying to be discreet about your activities on the internet.
If you have had any problems with this application or it is buggy, then you can simply get the same application that is available for purchase from the Android Market. This is a really easy process and it only takes a few minutes to go through the process. There is no need to continue using the software that is going to track your period but you can instead get the same software that is being offered at no cost with the ability to track your period and make sure that you are following all of your menstrual cycles so that you will know when to get your period.