LucidChart - LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.
Clue - Period and ovulation tracker app for iPhone
draw.io - Online diagramming application
Flo Health - The #1 app for women's menstrual health 💆♀️
yEd - yEd is a free desktop application to quickly create, import, edit, and automatically arrange diagrams. It runs on Windows, Mac OS X, and Unix/Linux.
Eve by Glow - A savvy sex & health app for women