Mildly intoxicated and Good2Go!
If you need further explanation, check out the horrifying promo video:
I think the app has the best intentions and it's certainly an accurate reflection of our troubled times, but who will this actually protect? Presenting this to a girl as a waiver suggests you think she might falsely accuse you of rape at a later date. If this is the sort of thing that crosses your mind before coitus then you're certainly not fit to be having sex/around women in general.
Secondly, taking a break from heavy petting to present the app reveals a level of doubt and uncertainty from one or both parties. So, once again, maybe reconsider consumating your relationship.
Thirdly, any predatory rapist can probably force a vulnerable, intoxicated girl to click 'good2go' on his phone. Alternatively, she could click 'no, thanks' and he could go ahead and rape her anyway. What with him being a rapist and all.