How much can partners see on Glow?

Girls I have a question -
I'm thinking of inviting SO to this app, mainly because it's a bit weird for me to tell him all the time OK now I'm ovulating, my period has started or is coming up etc. I know it doesn't have to be awkward (and it isn't for him, it's all in my head) but my question is: how much info can the partner see on Glow? I basically just want him to see where I am in my cycle, he doesn't have to know about my EWCM and all the other TMI-issues us girls share! Do any of you have partners on here? How much can they see?