Navigating TTC Tracking Apps

There are so many different apps out on the market, google brings up over 300,000 results, and if you've been actively looking up things to do with TTC you'll have noticed that a lot of your ads are targeted towards them now. I often get one on Facebook to do with natural conception which claims to be as effective as contraception by using temperatures. This is the same as what we will be doing to achieve the opposite. Go figure. I always have to stop myself from commenting the same thing on the adverts.