I personally haven't, but I know a lot of ladies on the board talk about using FRE (First Response Early). What exactly were you wanting to know about it? I'm sure someone can help you if we know that. Good luck! :)
I was wondering if FR was reliabe. I took a test this morning (3 days until AF) and got a very pale pink line, along with the dark pink one. So i'm hoping, hoping, hoping this is it. I will retest on Sunday.
Abby
*HUGS*
CHELLE