Editing my previous review and dropping the rating. This app has wiped out all of my data during updates multiple times. I have lost not only all cycle data, but also data like early pregnancy symptoms that would be nice to have for sentimental reasons, as well as for comparing symptoms in one pregnancy to symptoms in the next pregnancy. Fertility friend has a more complete cycle app, and so far hasnt erased my data. Previous review: Initially I tried to enter info from previous cycles and got weird results because I was entering the most recent cycles first and working backward to older cycles. Had to delete and reinstall to reset it and enter data from oldest to most recent and that seemed to fix it. Needs chart for bbt and more flexibility to change the predicted fertile days and expected period based on personal experience. Also, now that I am pregnant (and have entered numerous positive pregnancy tests into the app) it is now telling me I am on CD2 and still shows that I should be having a period now. I have not entered any bleeding under "flow". I am assuming it also does this to women who are late based on their previous data due to irregular cycles. This is probably why some women get weird cycle lengths. Maybe it is counting CD1 on both the day it thinks you should start and a new CD1 when you actually started. Frustrating that I cant fix this.