I've used Glow and Kindara Fertility Tracker. Glow is pretty good as it asks detailed questions, tips, even the likelihood of falling pregnant on each day (in percentage form).
Glow :) https://itunes.apple.com/us/app/glow-ovulation-period-tracker/id638021335?mt=8
Flo period and ovulation tracker. It also tracks pregnancy :)
I use the p tracker lite. It’s been really accurate for me
FLO App is not bad. Satisfied with that.
flo and period tracker
I like Flo. Pretty informative. :)
Try Dot. https://www.dottheapp.com
I use my trusty Google calendar!
My calendar