This product has been a great tool in learning about my cycle. It’s been very accurate when predicting ovulation based on the other tools I use. (ie. OPK’s, BBT, etc.) It was some what confusing the first month, however, the support system was so helpful!! My only reason for giving it 4 stars instead of 5 is because I haven’t gotten a BFP yet. I’m currently in my 3rd cycle using the monitor.