Being desperate as I am to concieve a second child, also after a miscarriage, I was willing to try anything. Getting fed up with peeing on ovulation sticks every day I thought this would be fun to try. I was rather sceptical at first as nothing was happening - particularly around 13/14th day of cycle which are apparently the 'optimum days' when bamm - on day 19 there were very strong 'ferning' patterns. I was amazed. I thought I am either doing this wrong or it doesn't work but it really does. It looks just like a lipstick, small and discreet, therefore easy to pop in your handbag. Easy to view patterns thru viewer. Was so keen to see results got a little impatient waiting for saliva to dry on lens! Overall a great little piece of kit, certainly a lot cheaper than shelling out for pee sticks every month. I would recommend it to any woman out there who is trying.