Since I’ve been on here I’ve noticed several threads with people who are all temp charting, or using persona, or isis scope, or some other method to predict their fertile times. Having looked at these threads and the threads where people don’t use any means of predicting their fertile times but just have sex at regular times to ensure that they are “caught” at their fertile time, it seems to me that by using these means, people don’t appear to get pg any quicker than the ones who use no means of prediction. So is it really useful to predict when you’re ovulating? Or is it just a means for persona, clearblue etc to make more money?