Maybe it was a coincidence but Maybe Baby worked for me the first month of using it - we had been TTC baby #2 for about five months without having any luck using OPKs.
I started testing with Maybe Baby on day 7 and got ferning on days 9 and 10, before I would even start with the OPKs (usually started on day 12).
I thought it was a dodgy when the ferning continued for the rest of the month then realised why when I got a BFP!
I think different things just work for different people, my friend only used one stick from her OPK and bingo BFP the first month TTC.
When you're TTC you can't help but try every option - whether the advice is for or against it...just incase.