I tried the app for 4 months and I'm impressed by it, mostly. However, I thing there is another bug in the app. My period normally takes 7 days. But in the report it shows : average cycle period = 3 days. Also, sometimes when i key the period,for example on the 3rd day of my cycle, the CD starts count itself at 1 again. I need to re-input it. That causes miscalculation of cycle period, etc. (I corrected it but the cycle still appears as 3days, so weird!