So I just stumbled upon this new digital ovulation test from clearblue - where it also detects an estrogen increase and gives you 4 days of fertile window, sort of like the fertility monitor? Has this been around and I haven't noticed it? When it gives you a flashing smiley, it means "high" fertility, when you get a solid smiley, it means "peak", detecting the usual LH surge. Anyone used this?? I'm about to order it!

http://www.clearblueeasy.com/healthcare/clearblue-advanced-digital-ovulation-test.php