If you have any problems with the questions of use, please feel free to leave a message to our fans group. :) https://www.facebook.com/cwfunapp This is a calculation of the girls menstruation app that let users calculate to reduce the likelihood of pregnancy. However, the results are for reference. The security measures still need to be done in making love. (for example: Condoms, Birth control pills, etc. ..) If you have any question,please contact me by e-mail,dont use the comments to report problems,because I dont know what happen to you.Thank you :) If you are interested in some advertisements,Please Click it to support us : ) 2014/07/09 PM08:40 The new flat color user interface is introduced, and the app is optimized.