Glow!

MommaBrew • Jesus Loving, Homeschooling, Hubby obsessing, Beautiful kid making Superhero
How accurate has Glow been for you? It has my next cycle down to begin the 12th but all of my other apps have the 16th or the 18th. 
I've been testing for ovulation and never got a definitive dark line and I've tested for pregnancy (BFN). This wait is nerve wrecking.