It's no longer safe to even use a period tracking app in many US states now. The women I know are all cautioning each other to go back to pen and paper, and ditch anything app based.
Most of us here knows ways around this, but many people are not educated.
One method is get off your smart phone and boot tails and do the searches there. Maybe that is something EFF can make known. Like list trusted onion sites that have information where women can go and get help.